A027974 - OEIS

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A027974

Sum{T(i,j)}, 0<=j<=i, 0<=i<=n, T given by A027960.

1, 5, 14, 35, 81, 180, 389, 825, 1726, 3575, 7349, 15020, 30561, 61965, 125294, 252795, 509161, 1024100, 2057549, 4130225, 8284926, 16609455, 33282989, 66669660, 133507081, 267285605, 535010414, 1070731475, 2142612801 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	FORMULA	`8*2^n - Fibonacci(n+5) - Fibonacci(n+3).` `G.f.: (1+2x)/((1-2x)(1-x-x^2)). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Sep 22 2008]`
	CROSSREFS	`a(n) = A101220(4, 2, n+1).` `Sequence in context: A001215 A066767 * A027983 A142585 A193557 A187198` `Adjacent sequences: A027971 A027972 A027973 * A027975 A027976 A027977`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified February 15 13:49 EST 2012. Contains 205810 sequences.