A272465 Indices n such that A272464(n)=1

1, 2, 4, 7, 12, 19, 29, 43, 64, 95, 142, 211, 317, 480, 726, 1096, 1644, 2458, 3669, 5480, 8204, 12327, 18628, 28284, 43141, 66067, 101609, 156823, 242640, 376282, 584667, 910022, 1418818, 2214963, 3461469, 5414729, 8477946, 13286504, 20840758, 32716407, 51395904

Offset

1,2

Comments

It appears that a(n)/a(n-1) converges to 3/2.

Links

Table of n, a(n) for n=1..41.

Rémy Sigrist, C program for A272465

Prog

(C) See Links section.

Crossrefs

Cf. A272464.

Sequence in context: A363276 A035301 A035297 * A153252 A079719 A300829

Adjacent sequences: A272462 A272463 A272464 * A272466 A272467 A272468

Keyword

nonn

Author

Max Barrentine, Apr 30 2016

Extensions

More terms from Rémy Sigrist, Jul 02 2021

Status

approved