A305385 - OEIS

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A305385

Indicator function of A140100.

4

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

1

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