id:A018790 - OEIS Search Results

Search: id:A018790

Displaying 1-1 of 1 results found.

page 1

Number of subsets of { 1, ..., n } containing an A.P. of length 5.

+0
1

0, 0, 0, 0, 0, 1, 3, 8, 20, 56, 144, 332, 751, 1803, 4163, 9401, 20404, 45169, 98753, 213575, 457945, 990624, 2119184, 4493766, 9460916, 19947914, 41567180, 86219409, 178237782, 369985101, 765030649, 1572706886, 3224800994, 6617409989 (list; graph; listen)

	OFFSET	`0,7`
	CROSSREFS	`Adjacent sequences: A018787 A018788 A018789 this_sequence A018791 A018792 A018793` `Sequence in context: A026995 A018035 A122228 this_sequence A009436 A108189 A110861`
	KEYWORD	`nonn`
	AUTHOR	`David W. Wilson (davidwwilson(AT)comcast.net)`

page 1

Search completed in 0.002 seconds

Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

AT&T Labs Research