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A090453 Third column (m=4) of array A090452. 2
2, 16, 51, 118, 230, 402, 651, 996, 1458, 2060, 2827, 3786, 4966, 6398, 8115, 10152, 12546, 15336, 18563, 22270, 26502, 31306, 36731, 42828, 49650, 57252, 65691, 75026, 85318, 96630, 109027, 122576, 137346, 153408, 170835, 189702, 210086 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

FORMULA

a(n)= (n+1)*(n^3+15*n^2+56*n+24)/12.

G.f.: (2+6*x-9*x^2+3*x^3)/(1-x)^5.

CROSSREFS

Cf. A055998, A090454.

Sequence in context: A012180 A058376 A120948 * A006885 A027273 A033431

Adjacent sequences:  A090450 A090451 A090452 * A090454 A090455 A090456

KEYWORD

nonn,easy

AUTHOR

Wolfdieter Lang (wolfdieter.lang_AT_physik_DOT_uni-karlsruhe_DOT_de), Dec 23 2003

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Last modified February 17 23:58 EST 2012. Contains 206085 sequences.