A316324 Indices of 1's in A305389.

0, 5, 9, 14, 19, 23, 28, 31, 36, 40, 45, 49, 54, 57, 62, 66, 71, 76, 80, 85, 88, 93, 97, 102, 107, 111, 116, 119, 124, 128, 133, 137, 142, 145, 150, 154, 159, 164, 168, 173, 176, 181, 185, 190, 193, 198, 202, 207, 212, 216, 221, 224, 229, 233, 238, 242, 247, 250, 255, 259, 264, 269, 273, 278

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

f:= 'f':
f(1):= 2: f(2):= 3: f(3):= (1, 2, 3):
S:= [1];
for i from 1 to 5 do T:= map(f, S); U:= map(f, T); S:= map(f, U); od:
select(t -> S[t+1]=1, [$0..nops(S)-1]); # Robert Israel, May 07 2019

Crossrefs

Cf. A305389.

A316324, A316325, A316326 have the same relation to A305389 as A003144, A003145, A003146 do to the ternary tribonacci word A080843 (or A092782).

Sequence in context: A314886 A140490 A314887 * A247972 A301298 A314888

Adjacent sequences: A316321 A316322 A316323 * A316325 A316326 A316327

Keyword

nonn

Author

N. J. A. Sloane, Jul 09 2018

Status

approved