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A248641 Lexicographically earliest positive sequence which does not contain a 4-term equidistant subsequence (a(n+k*d); k=0,1,2,3) in arithmetic progression. 1
1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 2, 2, 2, 3, 1, 1, 1, 2, 1, 2, 2, 2, 3, 3, 3, 1, 1, 3, 1, 1, 1, 2, 2, 1, 2, 2, 1, 2, 2, 2, 3, 3, 2, 3, 2, 3, 3, 5, 1, 1, 1, 3, 1, 1, 3, 1, 1, 1, 2, 2, 2, 3, 1, 2, 1, 1, 1, 2, 2, 2, 3, 4, 2, 3, 2, 2, 2, 3, 3, 1, 3, 3, 3, 5, 5, 4, 1, 1, 1, 3, 1, 2, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,4

COMMENTS

See A248625 for more information, links and examples.

LINKS

Table of n, a(n) for n=0..92.

PROG

(PARI) a=[]; for(n=1, 190, a=concat(a, 1); while(hasAP(a, 4), a[#a]++)); a \\ See A248625 for hasAP().

CROSSREFS

Cf. A248625, A248639, A248640, A248627, A229037, A241752.

Sequence in context: A003651 A073203 A073204 * A282934 A273619 A034003

Adjacent sequences:  A248638 A248639 A248640 * A248642 A248643 A248644

KEYWORD

nonn

AUTHOR

M. F. Hasler, Oct 10 2014

STATUS

approved

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Last modified February 21 06:40 EST 2019. Contains 320371 sequences. (Running on oeis4.)