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

1,2

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

Table of n, a(n) for n=1..25.

Rémy Sigrist, C program

Prog

(C) See Links section.

Crossrefs

Cf. A000079, A116624, A116625.

Sequence in context: A107481 A058521 A372266 * A140463 A223578 A073147

Adjacent sequences: A116625 A116626 A116627 * A116629 A116630 A116631

Keyword

nonn,more

Author

Paul D. Hanna and Antti Karttunen, Feb 21 2006

Extensions

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

Status

approved