login
A018793
Number of subsets of { 1, ..., n } containing an A.P. of length 8.
0
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
OFFSET
0,10
CROSSREFS
Sequence in context: A049610 A018795 A018794 * A018792 A360263 A018791
KEYWORD
nonn
STATUS
approved