A248640 - OEIS

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A248640

Least nonnegative sequence which does not contain a 5-term equidistant subsequence (a(n+k*d); k=0,1,2,3,4) in arithmetic progression.

0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0

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OFFSET

0,24

COMMENTS

See A248625 for more information, links and examples.

LINKS

Table of n, a(n) for n=0..91.

PROG

(PARI) a=[]; for(n=1, 190, a=concat(a, 0); while(hasAP(a, 5), a[#a]++)); a \\ See A248625 for hasAP(). Use concat(a, 1) for the "positive integer" variant.

CROSSREFS

Cf. A248625, A248639, A248627, A229037, A241752.

Sequence in context: A281084 A186230 A214304 * A281083 A230629 A027359

Adjacent sequences: A248637 A248638 A248639 * A248641 A248642 A248643

KEYWORD

nonn

AUTHOR

M. F. Hasler, Oct 10 2014

STATUS

approved