A056128 - OEIS

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A056128

A second order recursive sequence.

1, 20, 174, 988, 4277, 15288, 47320, 130832, 330174, 772616, 1696396, 3527160, 6995534, 13312768, 24426552, 43385360, 74847175, 125777340, 206390730, 331405620, 521690715, 806403000, 1225732560, 1834391520, 2706007980 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`a(n)=[9n+11]*C(n+10, 10)/11. G.f.(x)=(1+8x)/(1-x)^12.`
	CROSSREFS	`Cf. A056003.` `Sequence in context: A056932 A010826 A022712 * A027791 A047819 A163689` `Adjacent sequences: A056125 A056126 A056127 * A056129 A056130 A056131`
	KEYWORD	`easy,nonn`
	AUTHOR	`Barry E. Williams, Jul 08 2000`

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Last modified February 16 06:37 EST 2012. Contains 205860 sequences.