A018793 - OEIS

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A018793

Number of subsets of { 1, ..., n } containing an A.P. of length 8.

0, 0, 0, 0, 0, 0, 0, 0, 1, 3, 8, 20, 48, 112, 256, 684, 1696, 3840, 8575, 18939, 41452, 90046, 206952, 466731, 1037736, 2233540, 4782408, 10194180, 21638844, 47278465, 102437882, 220088444, 470234676

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,10

LINKS

Table of n, a(n) for n=0..32.

CROSSREFS

Sequence in context: A049610 A018795 A018794 * A018792 A360263 A018791

Adjacent sequences: A018790 A018791 A018792 * A018794 A018795 A018796

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved