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!)
A134464 (A127648 * A000012 + A000012 * A127773) - A000012. 2
1, 2, 4, 3, 5, 8, 4, 6, 9, 13, 5, 7, 10, 14, 19, 6, 8, 11, 15, 20, 26, 7, 9, 12, 16, 21, 27, 34, 8, 10, 13, 17, 22, 28, 35, 43, 9, 11, 14, 18, 23, 29, 36, 44, 53, 10, 12, 15, 19, 24, 30, 37, 45, 54, 64 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Row sums = A134465: (1, 6, 16, 32, 55, 86,...).

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

FORMULA

(A127648 * A000012 * A000012 * A127773) - A000012, as infinite lower triangular matrices.

EXAMPLE

First few rows of the triangle are:

1;

2, 4;

3, 5, 8;

4, 6, 9, 13;

5, 7, 10, 14, 19;

6, 8, 11, 15, 20, 26;

7, 9, 12, 16, 21, 27, 34;

...

MATHEMATICA

Flatten[Table[RecurrenceTable[{a[1]==i, a[n]==a[n-1]+n}, a, {n, i}], {i, 10}]] (* Harvey P. Dale, Nov 12 2013 *)

CROSSREFS

Cf. A127648, A127773, A134465.

Sequence in context: A277375 A232798 A155850 * A104472 A316964 A187790

Adjacent sequences:  A134461 A134462 A134463 * A134465 A134466 A134467

KEYWORD

nonn,tabl

AUTHOR

Gary W. Adamson, Oct 26 2007

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 August 1 10:37 EDT 2021. Contains 346385 sequences. (Running on oeis4.)