A323476 Positions of 3's in A306211.

37, 52, 58, 76, 82, 91, 115, 121, 130, 145, 177, 183, 192, 207, 230, 257, 275, 281, 290, 305, 328, 355, 364, 391, 404, 410, 416, 431, 437, 446, 461, 484, 511, 520, 547, 560, 566, 572, 578, 605, 618, 624, 630, 640, 646, 654, 678, 684, 693, 708, 731, 758, 767

Offset

1,1

Links

Rémy Sigrist, Table of n, a(n) for n = 1..25000

Rémy Sigrist, C program for A323476

Mathematica

seq[n_] := seq[n] = If[n==1, {1}, Join[seq[n-1], Length /@ Split[seq[n-1]]] ];
Position[seq[26], 3] // Flatten (* Jean-François Alcover, Jul 19 2022 *)

Prog

(C) See Links section.

Crossrefs

Cf. A306211, A306222, A306223.

Sequence in context: A253019 A298504 A074401 * A345169 A350250 A092105

Adjacent sequences: A323473 A323474 A323475 * A323477 A323478 A323479

Keyword

nonn

Author

N. J. A. Sloane, Jan 29 2019

Status

approved