id:A024196 - OEIS Search Results

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a(n) = 2nd elementary symmetric function of the first n+1 odd positive integers.

+0
5

3, 23, 86, 230, 505, 973, 1708, 2796, 4335, 6435, 9218, 12818, 17381, 23065, 30040, 38488, 48603, 60591, 74670, 91070, 110033, 131813, 156676, 184900, 216775, 252603, 292698, 337386, 387005, 441905, 502448, 569008, 641971, 721735, 808710, 903318 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`n(n+1)(3n^2+5n+1)/6.`
	CROSSREFS	`Contribution from Johannes W. Meijer (meijgia(AT)hotmail.com), Jun 08 2009: (Start)` `Equals third right hand column of A028338 triangle.` `Equals third left hand column of A109692 triangle.` `Equals third right hand column of A161198 triangle divided by 2^m.` `(End)` `Sequence in context: A126335 A027701 A032017 this_sequence A112459 A039506 A006557` `Adjacent sequences: A024193 A024194 A024195 this_sequence A024197 A024198 A024199`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 22 15:28 EST 2009. Contains 167310 sequences.

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