A116628 Positions where A116624 is a power of 2.

1, 2, 3, 4, 7, 11, 26, 42, 109, 166, 373, 772, 1532, 2930, 6154, 10933, 24184, 44069, 105575, 155528, 374727, 681122, 1630332, 3077586, 6523332

Offset: 1

Author

Paul D. Hanna and Antti Karttunen, Feb 21 2006

Keywords

• nonn
• more

Comments

Conjecture: all the powers of 2 occur in A116624 (implying that none occur in A116625) and they occur in ascending order, in which case A116624(a(n)) = A000079(n-1). Checked up to n=16.

Links

• Rémy Sigrist, C program

Crossrefs

Cf. A000079, A116624, A116625.

Programs

C

See Links section.

Extensions

a(17)-a(25) from Rémy Sigrist, Feb 14 2023