A305387 - OEIS

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A305387

Indicator function of A140102.

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

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OFFSET

COMMENTS

a(n) = 1 iff n is in A140102.

LINKS

Table of n, a(n) for n=1..98.

FORMULA

A305385(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: A323000 A005713 A188031 * A085241 A105368 A138019

Adjacent sequences: A305384 A305385 A305386 * A305388 A305389 A305390

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jun 21 2018

STATUS

approved