id:A124133 - OEIS Search Results

Search: id:A124133

Displaying 1-1 of 1 results found.

page 1

a(n)=(-1/2)*sum_{i1+i2+i3=2n} ((2*n)!/(i1! i2! i3!))*B(i1) where B are the Bernoulli numbers.

+0
1

0, 5, 28, 123, 506, 2041, 8184, 32759, 131062, 524277, 2097140, 8388595, 33554418, 134217713, 536870896, 2147483631, 8589934574, 34359738349, 137438953452, 549755813867, 2199023255530, 8796093022185, 35184372088808 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n)=2^(2*n-1)-n-1`
	PROGRAM	`(PARI) a(n)=2^(2*n-1)-n-1`
	CROSSREFS	`Cf. A001469.` `Sequence in context: A088727 A027016 A034582 this_sequence A054148 A037591 A037682` `Adjacent sequences: A124130 A124131 A124132 this_sequence A124134 A124135 A124136`
	KEYWORD	`nonn`
	AUTHOR	`Benoit Cloitre (benoit7848c(AT)orange.fr), Nov 30 2006`

page 1

Search completed in 0.002 seconds

Last modified December 1 19:22 EST 2009. Contains 167811 sequences.

AT&T Labs Research