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A022287 n*(29n+1)/2. 0
0, 15, 59, 132, 234, 365, 525, 714, 932, 1179, 1455, 1760, 2094, 2457, 2849, 3270, 3720, 4199, 4707, 5244, 5810, 6405, 7029, 7682, 8364, 9075, 9815, 10584, 11382, 12209, 13065, 13950, 14864, 15807, 16779 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n)=29*n+a(n-1)-14 (with a(0)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 04 2010]

EXAMPLE

a(1)=29*1+0-14=15; a(2)=29*2+15-14=59; a(3)=29*3+59-14=132 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 04 2010]

CROSSREFS

Sequence in context: A183942 A012691 A020187 * A206238 A064761 A005945

Adjacent sequences:  A022284 A022285 A022286 * A022288 A022289 A022290

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 16 04:18 EST 2012. Contains 205860 sequences.