A086274 - OEIS

This site is supported by donations to The OEIS Foundation.

A086274

Antidiagonal sums of A086272 (and of A086273).

1, 4, 12, 29, 60, 111, 189, 302, 459, 670, 946, 1299, 1742, 2289, 2955, 3756, 4709, 5832, 7144, 8665, 10416, 12419, 14697, 17274, 20175, 23426, 27054, 31087, 35554, 40485, 45911, 51864, 58377, 65484, 73220, 81621, 90724, 100567, 111189 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n)=n+Sum{(k+1)C(n+1-k, 2): k=1, 2, ..., n}.` `n(n^3+6n^2-n+18)/24.`
	CROSSREFS	`Cf. A086272, A086273.` `A005582(n-1) + n.` `Sequence in context: A050898 A009845 A014342 * A174121 A128563 A192978` `Adjacent sequences: A086271 A086272 A086273 * A086275 A086276 A086277`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu), Jul 14 2003`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 01:35 EST 2012. Contains 205567 sequences.