id:A024391 - OEIS Search Results

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2nd elementary symmetric function of the first n+1 positive integers congruent to 2 mod 3.

+0
2

10, 66, 231, 595, 1275, 2415, 4186, 6786, 10440, 15400, 21945, 30381, 41041, 54285, 70500, 90100, 113526, 141246, 173755, 211575, 255255, 305371, 362526, 427350, 500500, 582660, 674541, 776881, 890445, 1016025, 1154440, 1306536, 1473186, 1655290 (list; graph; listen)

	OFFSET	`1,1`
	FORMULA	`n(n+1)(3n+2)(3n+5)/8.` `O.g.f.: -x(10+16x+x^2)/(-1+x)^5 . - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 14 2008`
	CROSSREFS	`Sequence in context: A097791 A140362 A159838 this_sequence A074362 A080421 A004310` `Adjacent sequences: A024388 A024389 A024390 this_sequence A024392 A024393 A024394`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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

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