A340498 Where 2^n appears in A340488 for the first time.

3, 6, 16, 56, 216, 856, 3416, 13656, 54616, 218456, 873816, 3495256, 13981016, 55924056, 223696216, 894784856, 3579139416, 14316557656, 57266230616, 229064922456, 916259689816

Offset: 0

Author

N. J. A. Sloane, Jan 11 2021

Keywords

• nonn
• more

Comments

A subsequence of A340494 and A340497. Note that A340494 has a conjectured g.f.

Links

• Rémy Sigrist, C program for A340498

Crossrefs

Cf. A340488, A340494-A340497.

Programs

C

See Links section.

Extensions

a(8)-a(20) from Rémy Sigrist, Jan 11 2021