id:A077939 - OEIS Search Results

Search: id:A077939

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Expansion of 1/(1-2*x-x^2-x^3).

+0
7

1, 2, 5, 13, 33, 84, 214, 545, 1388, 3535, 9003, 22929, 58396, 148724, 378773, 964666, 2456829, 6257097, 15935689, 40585304, 103363394, 263247781, 670444260, 1707499695, 4348691431, 11075326817, 28206844760, 71837707768, 182957587113, 465959726754 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = abs(A077986(n)) = A077849(n)-A077849(n-1) = \|A077922(n)\|+\|A077922(n-1)\| = sum(k=0, n, A077997(k)). - Ralf Stephan, Feb 02 2004`
	CROSSREFS	`Sequence in context: A007443 A120925 A086588 this_sequence A077986 A007020 A080888` `Adjacent sequences: A077936 A077937 A077938 this_sequence A077940 A077941 A077942`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Nov 17 2002`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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