login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A251715 Array: A251637(n,k) / prime(n). 5
1, 1, 2, 3, 3, 4, 2, 1, 5, 7, 2, 5, 5, 2, 3, 3, 1, 1, 7, 4, 6, 3, 1, 3, 3, 2, 7, 8, 2, 1, 2, 5, 4, 4, 9, 5, 3, 1, 5, 5, 4, 13, 9, 13, 10, 3, 1, 5, 2, 7, 9, 7, 17, 11, 11, 2, 1, 5, 3, 4, 4, 7, 9, 11, 15, 13, 2, 1, 2, 2, 7, 7, 9, 6, 6, 13, 17, 14, 3, 1, 3, 5 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

T(n,k) = A251637(n,k) / A000040(n);

A251637(n,k) = T(n,k) * A000040(n);

for n > 2: T(n,1) = A251619(n);

conjecture: A098550 is a permutation of the positive integers iff all rows are permutations of the positive integers.

For third column with row numbers > 4: see A251542. - Reinhard Zumkeller, Dec 16 2014

LINKS

Reinhard Zumkeller, Rows n = 1..125 of triangle, flattened

EXAMPLE

.   n   p |  A251637(n,k) / p, with p = prime(n), n = 1..25, k = 1..20

.  -------+-----------------------------------------------------------

.   1   2 |  1 2 4 7 3  6 8  5 10 11 13 14 16  9 12 17 18 15 19 21 22

.   2   3 |  1 3 5 2 4  7 9 13 11 15 17  6  8 12 10 21 14 19 23 16 25

.   3   5 |  3 1 5 7 2  4 9 17 11 13  6 19  8 10 23 15 12 35 21 14 16

.   4   7 |  2 5 1 3 4 13 7  9  6  8 11 17 19 23 25 15 10 12 47 29 21

.   5  11 |  2 1 3 5 4  9 7  6  8 15 13 11 17 10 12 21 19 14 16 25 18

.   6  13 |  3 1 2 5 7  4 9  6  8 15 11 10 12 17 13 19 21 14 16 23 25

.   7  17 |  3 1 5 2 4  7 9  6 11  8 10 15 13 12 14 21 17 16 19 23 25

.   8  19 |  2 1 5 3 7  4 9  6  8 11 13 10 15 12 14 21 17 19 23 16 25

.   9  23 |  3 1 5 2 7  4 6  9  8 11 13 15 10 12 19 17 14 21 16 25 18

.  10  29 |  3 1 2 5 7  4 6  9  8 11 13 10 15 12 17 14 21 19 16 25 23

.  11  31 |  2 1 3 5 4  7 9  6 11 13  8 15 10 12 17 19 14 21 16 23 18

.  12  37 |  2 1 3 5 4  7 6  9  8 11 15 10 17 13 12 23 19 21 14 16 18

.  13  41 |  3 1 2 5 4  7 6  9 11  8 10 13 15 12 17 14 21 19 16 25 23

.  14  43 |  2 1 3 5 4  7 9  6 11  8 10 15 13 12 14 19 17 21 16 23 18

.  15  47 |  2 1 7 3 5  4 6  9 11  8 10 13 15 12 17 19 14 21 16 23 25

.  16  53 |  2 1 5 3 4  7 6  9  8 11 13 10 15 12 17 14 21 19 16 18 25

.  17  59 |  2 1 3 5 4  7 6  9 11  8 13 10 15 17 12 14 19 21 16 23 18

.  18  61 |  2 1 7 3 5  4 6  9 11  8 13 10 15 12 17 14 19 21 16 23 18

.  19  67 |  3 1 5 2 4  7 9  6  8 11 13 10 15 12 17 14 19 21 16 23 18

.  20  71 |  2 1 3 5 4  7 6  9  8 11 10 15 13 12 17 14 19 21 16 23 18

.  21  73 |  2 1 5 3 4  7 6  9  8 11 10 13 15 12 17 14 19 21 16 23 18

.  22  79 |  2 1 3 5 4  7 6  9  8 11 13 10 15 12 14 17 19 21 16 23 18

.  23  83 |  3 1 7 2 5  4 6  9 11  8 13 10 15 12 17 19 14 21 16 23 18

.  24  89 |  2 1 3 5 4  7 6  9  8 11 13 10 15 12 17 14 21 19 16 23 18

.  25  97 |  3 1 7 2 5  4 6  9 11  8 10 13 15 12 17 14 19 21 16 23 18 .

.  --------------------------------------------------------------------

See table A251637 for T(n,k) * p.

CROSSREFS

Cf. A098550, A251637, A000040, A251619.

Sequence in context: A060573 A279086 A316910 * A304758 A103893 A288159

Adjacent sequences:  A251712 A251713 A251714 * A251716 A251717 A251718

KEYWORD

nonn,tabl

AUTHOR

Reinhard Zumkeller, Dec 09 2014

EXTENSIONS

Wrong data replaced; Reinhard Zumkeller, Dec 15 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 20 20:34 EST 2020. Contains 332084 sequences. (Running on oeis4.)