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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A058699 a(n) = p(p(n)), p = partition numbers A000041. 8
 1, 1, 2, 3, 7, 15, 56, 176, 1002, 5604, 53174, 526823, 10619863, 214481126, 9035836076, 476715857290, 51820051838712, 7479565078510584, 2645418340688763701, 1318520401612270233223, 1774758704783877366657989, 4025091510519029370421431033 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 LINKS Alois P. Heinz, Table of n, a(n) for n = 0..50 FORMULA a(n) = A000041(A000041(n)). - Omar E. Pol, Apr 25 2016 MAPLE a:= n-> (combinat[numbpart]@@2)(n): seq(a(n), n=0..22);  # Alois P. Heinz, Apr 05 2017 MATHEMATICA Table[Nest[PartitionsP, n, 2], {n, 0, 20}] (* Michael De Vlieger, Apr 25 2016 *) PROG (PARI) a(n) = numbpart(numbpart(n)); \\ Michel Marcus, Apr 25 2016 CROSSREFS Cf. A000009, A000041, A284908, A284909, A284910. Sequence in context: A110888 A133736 A058698 * A250193 A004782 A049956 Adjacent sequences:  A058696 A058697 A058698 * A058700 A058701 A058702 KEYWORD nonn AUTHOR N. J. A. Sloane, Dec 31 2000 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.

Last modified September 28 17:43 EDT 2020. Contains 337393 sequences. (Running on oeis4.)