1,3

A178401(a(n)) > 0; complement of A178402.

A010785, A050278, A178358, A178359 are subsequences;

a(n) = A131207(n) for n < 48;

a(n) = A134336(n) for n < 48;

a(n+1) = A032981(n) for n < 38.

R. Zumkeller, Table of n, a(n) for n = 1..10000

Sequence in context: A257737 A130577 A252490 * A134336 A131207 A032981

Adjacent sequences: A178400 A178401 A178402 * A178404 A178405 A178406

base,nonn

Reinhard Zumkeller, May 27 2010

approved