id:A115188 - OEIS Search Results

Search: id:A115188

Displaying 1-1 of 1 results found.

page 1

Second diagonal (M=2) of triangle A115154 (called Y(3,1)).

+0
2

1, 13, 115, 1036, 9688, 93571, 927523, 9387580, 96634294, 1008719002, 10653244294, 113630599852, 1222361061310, 13246563382735, 144479425979635, 1584810988780420, 17471975574010630, 193493968384827670 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)= A115154(n+1,n+1), n>=0.` `Recurrence: a(n)= b(n) - 3b(n-1), with b(n):= A064063(n+2), n>=0.` `G.f.: ((-3+2x) + 3(1-3x)c(3x))/(x*(2+x)), with the o.g.f. c(x) of A000108 (Catalan).`
	EXAMPLE	`115 = a(2) = A064063(4) - 3* A064063(3) = 190 - 3*25.`
	CROSSREFS	`Sequence in context: A089569 A048383 A016765 this_sequence A021034 A022737 A016295` `Adjacent sequences: A115185 A115186 A115187 this_sequence A115189 A115190 A115191`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Feb 23 2006`

page 1

Search completed in 0.002 seconds

Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research