1,2

Appears to be finite with the last term being a(1578727)=161352166. If a(1578728) exists, it is greater than 10^9.

The (apparently) last 19 terms are listed in A175321.

Computed at the suggestion of Jonathan Vos Post.

J. S. Kimberley, Table of n, a(n) for n=1..1578727

The complement of A175319.

Cf. A174682.

Sequence in context: A047301 A186275 A214857 * A325597 A001953 A230748

Adjacent sequences: A175317 A175318 A175319 * A175321 A175322 A175323

nonn

Jason Kimberley, Apr 04 2010

approved