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A085474 C(2*n+4,4)-C(2*n,4). 3
1, 15, 69, 195, 425, 791, 1325, 2059, 3025, 4255, 5781, 7635, 9849, 12455, 15485, 18971, 22945, 27439, 32485, 38115, 44361, 51255, 58829, 67115, 76145, 85951, 96565, 108019, 120345, 133575, 147741, 162875, 179009, 196175, 214405, 233731 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

T(n,4) of A085475.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

FORMULA

G.f.: (1+11x+15x^2+5x^3)/(1-x)^4; a(n)=(16n^3+12n^2+14n+3)/3.

PROG

(MAGMA) [(16*n^3+12*n^2+14*n+3)/3: n in [0..50]]; // Vincenzo Librandi, Sep 22 2011

CROSSREFS

Cf. A016813, A085473.

Sequence in context: A062392 A015876 A201126 * A124893 A126402 A053134

Adjacent sequences:  A085471 A085472 A085473 * A085475 A085476 A085477

KEYWORD

nonn,easy

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Jul 01 2003

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Last modified February 14 06:48 EST 2012. Contains 205577 sequences.