A053132 - OEIS

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A053132

One half of binomial coefficients C(2*n-4,5).

3, 28, 126, 396, 1001, 2184, 4284, 7752, 13167, 21252, 32890, 49140, 71253, 100688, 139128, 188496, 250971, 329004, 425334, 543004, 685377, 856152, 1059380, 1299480, 1581255, 1909908, 2291058, 2730756, 3235501, 3812256, 4468464 (list; graph; refs; listen; history; internal format)

	OFFSET	`5,1`
	COMMENTS	`a(n)= A053127(n)/2`
	LINKS	`Vincenzo Librandi, Table of n, a(n) for n = 5..200`
	FORMULA	`a(n)= binomial(2n-4, 5)/2 if n >= 5 else 0; G.f.: (x^5)(3+10x+3x^2)/(1-x)^6.`
	PROG	`(MAGMA) [Binomial(2*n-4, 5)/2: n in [5..40]]; // Vincenzo Librandi, Oct 07 2011`
	CROSSREFS	`Cf. A053127.` `Sequence in context: A165393 A107651 A100019 * A048367 A095665 A145346` `Adjacent sequences: A053129 A053130 A053131 * A053133 A053134 A053135`
	KEYWORD	`nonn,easy`
	AUTHOR	`Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)`

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Last modified February 15 10:06 EST 2012. Contains 205763 sequences.