

A118471


a(0)=1. a(n) = a(n1)*(n+1), if n is in the sequence. a(n)= a(n1) +1, if n is missing from the sequence.


0



1, 2, 6, 7, 8, 9, 63, 504, 4536, 45360, 45361, 45362, 45363, 45364, 45365, 45366, 45367, 45368, 45369, 45370, 45371, 45372, 45373, 45374, 45375, 45376, 45377, 45378, 45379, 45380, 45381, 45382, 45383, 45384, 45385, 45386, 45387, 45388
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,2


LINKS

Table of n, a(n) for n=0..37.


MATHEMATICA

f[s_] := Block[{n = Length@s}, Append[s, If[MemberQ[s, n], s[[ 1]](n + 1), s[[ 1]] + 1]]]; Nest[f, {1}, 40] (from Robert G. Wilson v, May 16 2006)


CROSSREFS

Sequence in context: A138168 A047279 A162917 * A167456 A023633 A028735
Adjacent sequences: A118468 A118469 A118470 * A118472 A118473 A118474


KEYWORD

easy,nonn


AUTHOR

Leroy Quet, May 04 2006


STATUS

approved



