id:A038751 - OEIS Search Results

Search: id:A038751

Displaying 1-1 of 1 results found.

page 1

A variant of the recurrence for A001190.

+0
2

0, 1, 1, 0, 1, 1, 2, 3, 6, 9, 18, 30, 60, 105, 210, 381, 765, 1425, 2868, 5454, 11004, 21210, 42930, 83673, 169851, 333843, 679602, 1345476, 2745636, 5467275, 11182365, 22379895, 45866418, 92180781, 189275955, 381831396, 785328636 (list; graph; listen)

	OFFSET	`0,7`
	MAPLE	`A038751 := proc(n) option remember; local s, k; if n<=1 then RETURN(n); else s := 0; if n mod 2 = 0 then s := A038751(n/2) * (A038751(n/2) + 1)/2; for k from 1 to n/2 - 1 do s := s + A038751(k) * A038751(n - k); od; RETURN(s); else for k from 1 to (n - 1)/2 - 1 do s := s + A038751(k) * A038751(n - k); od; RETURN(s); fi; fi; end;`
	CROSSREFS	`Cf. A001190, A038750.` `Sequence in context: A107847 A059966 A095718 this_sequence A018518 A091326 A113863` `Adjacent sequences: A038748 A038749 A038750 this_sequence A038752 A038753 A038754`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), May 03 2000`

page 1

Search completed in 0.002 seconds

Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research