id:A128496 - OEIS Search Results

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Row sums of unsigned triangle |A128495|=|S(2;n,m)| (sums of squares of Chebyshev's S-polynomials).

+0
2

1, 2, 4, 9, 20, 50, 125, 324, 840, 2195, 5736, 15012, 39289, 102854, 269260, 704925, 1845500, 4831574, 12649205, 33116040, 86698896, 226980647, 594243024, 1555748424, 4073002225, 10663258250, 27916772500, 73087059249, 191344405220 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum(\|A128495(n,m)\|,m=0..n).`
	CROSSREFS	`Cf. A004523 (looks like signed row sums).` `Sequence in context: A068051 A032289 A006648 this_sequence A134955 A027881 A002861` `Adjacent sequences: A128493 A128494 A128495 this_sequence A128497 A128498 A128499`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de) Apr 04 2007`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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