Invitation: celebrating 50 years of OEIS, 250000 sequences, and Sloane's 75th, there will be a conference at DIMACS, Rutgers, Oct 9-10 2014.

1,3

Table of n, a(n) for n=1..66.

Sequence in context: A125236 A137624 A238246 * A054353 A031948 A169957

Adjacent sequences: A099464 A099465 A099466 * A099468 A099469 A099470

easy,nonn

Gaetan Polard (gaetan27(AT)hotmail.com), Nov 18 2004

approved