id:A015644 - OEIS Search Results

Search: id:A015644

Displaying 1-1 of 1 results found.

page 1

Number of 5-tuples of different integers from [ 1,n ] with no common factors among quadruples.

+0
1

0, 0, 0, 0, 1, 6, 21, 52, 121, 226, 431, 688, 1167, 1726, 2651, 3696, 5441, 7140, 10059, 12941, 17287, 21710, 28659, 34724, 44705, 53942, 67131, 79828, 99171, 114846, 140665, 163317, 194706, 224008, 266997, 301436, 356761, 403846 (list; graph; listen)

	OFFSET	`1,6`
	CROSSREFS	`Sequence in context: A097124 A135454 A069778 this_sequence A067680 A115052 A025203` `Adjacent sequences: A015641 A015642 A015643 this_sequence A015645 A015646 A015647`
	KEYWORD	`nonn`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

page 1

Search completed in 0.002 seconds

Last modified November 23 17:09 EST 2009. Contains 167438 sequences.

AT&T Labs Research