id:A126443 - OEIS Search Results

Search: id:A126443

Displaying 1-1 of 1 results found.

page 1

a(n) = Sum_{k=0..n-1} C(n-1,k)*a(k)*2^k for n>0, with a(0)=1.

+0
1

1, 1, 3, 17, 179, 3489, 127459, 8873137, 1195313043, 315321098561, 164239990789571, 169810102632595281, 349630019758589841523, 1436268949679165936016097, 11784559509424676876673518499 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Generated by a generalization of a recurrence for the Bell numbers (A000110).`
	FORMULA	`a(n) = Sum_{k=0..n(n-1)/2} A126347(n,k)2^k.`
	PROGRAM	`(PARI) a(n)=if(n==0, 1, sum(k=0, n-1, binomial(n-1, k)a(k)2^k))`
	CROSSREFS	`Cf. A126347, A000110.` `Sequence in context: A069856 A015083 A053934 this_sequence A054976 A088678 A133991` `Adjacent sequences: A126440 A126441 A126442 this_sequence A126444 A126445 A126446`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Jan 01 2007`

page 1

Search completed in 0.002 seconds

Last modified September 7 15:23 EDT 2008. Contains 143483 sequences.

AT&T Labs Research