login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A204890 Ordered differences of primes. 70
1, 3, 2, 5, 4, 2, 9, 8, 6, 4, 11, 10, 8, 6, 2, 15, 14, 12, 10, 6, 4, 17, 16, 14, 12, 8, 6, 2, 21, 20, 18, 16, 12, 10, 6, 4, 27, 26, 24, 22, 18, 16, 12, 10, 6, 29, 28, 26, 24, 20, 18, 14, 12, 8, 2, 35, 34, 32, 30, 26, 24, 20, 18, 14, 8, 6, 39, 38, 36, 34, 30, 28, 24, 22 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
For a guide to related sequences, see A204892.
A086800, zeros omitted. - R. J. Mathar, Sep 15 2012
LINKS
EXAMPLE
a(1) = p(2)-p(1) = 3-2 = 1
a(2) = p(3)-p(1) = 5-2 = 3
a(3) = p(3)-p(2) = 5-3 = 2
a(4) = p(4)-p(1) = 7-2 = 5
a(5) = p(4)-p(2) = 7-3 = 4
a(6) = p(4)-p(3) = 7-5 = 2
From Michel Marcus, May 12 2016: (Start)
As a triangle, first rows are:
1;
3, 2;
5, 4, 2;
9, 8, 6, 4;
11, 10, 8, 6, 2;
(End)
MATHEMATICA
(See the program at A204892.)
With[{prs=Prime[Range[20]]}, Flatten[Table[prs[[n]]-Take[prs, n-1], {n, 2, Length[prs]}]]] (* Harvey P. Dale, Dec 01 2013 *)
PROG
(PARI) tabl(nn) = {for (n=2, nn, for (m=1, n-1, print1(prime(n) - prime(m), ", "); ); print(); ); } \\ Michel Marcus, May 12 2016
CROSSREFS
Sequence in context: A143124 A205400 A205850 * A307775 A239680 A128076
KEYWORD
nonn,tabl,easy
AUTHOR
Clark Kimberling, Jan 20 2012
STATUS
approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)