A305385 - OEIS

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A305385

Indicator function of A140100.

1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1

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OFFSET

COMMENTS

a(n) = 1 iff n is in A140100.

LINKS

Table of n, a(n) for n=1..94.

Jeffrey Shallit, Some Tribonacci conjectures, arXiv:2210.03996 [math.CO], 2022.

FORMULA

a(n)+A305386(n) = A305387(n)+A305388(n) = 1 for all n.

CROSSREFS

The indicator functions for A140100, A140101, A140102, A140103 are given in A305385, A305386, A305387, A305388.

Sequence in context: A144612 A174208 A141687 * A260190 A260192 A057078

Adjacent sequences: A305382 A305383 A305384 * A305386 A305387 A305388

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 21 2018

STATUS

approved