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Search: id:A099760
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A099760 a(0)=1; for n >= 0, a(n+1)=2*n*a(n)+2. +0
3
1, 2, 6, 26, 158, 1266, 12662, 151946, 2127246, 34035938, 612646886, 12252937722, 269564629886, 6469551117266, 168208329048918, 4709833213369706, 141294996401091182, 4521439884834917826, 153728956084387206086 (list; graph; listen)
OFFSET

0,2

COMMENT

Row sums of triangle A099759.

EXAMPLE

a(3)=26, so a(4)=2*3*26+2=158.

MAPLE

a[0]:=1: for n from 0 to 21 do a[n+1]:=2*n*a[n]+2 od: seq(a[n], n=0..21); (Deutsch)

CROSSREFS

Sequence in context: A107104 A123306 A099758 this_sequence A112934 A135922 A103367

Adjacent sequences: A099757 A099758 A099759 this_sequence A099761 A099762 A099763

KEYWORD

easy,nonn

AUTHOR

Miklos Kristof (kristmikl(AT)freemail.hu), Nov 11 2004

EXTENSIONS

More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Feb 23 2005

Edited by Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Feb 17 2007

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.


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