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A022275 n*(17n+1)/2. 0
0, 9, 35, 78, 138, 215, 309, 420, 548, 693, 855, 1034, 1230, 1443, 1673, 1920, 2184, 2465, 2763, 3078, 3410, 3759, 4125, 4508, 4908, 5325, 5759, 6210, 6678, 7163, 7665, 8184, 8720, 9273, 9843, 10430, 11034 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n)=17*n+a(n-1)-8 (with a(0)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 04 2010]

EXAMPLE

a(1)=17*1+0-8=9; a(2)=17*2+9-8=35; a(3)=17*3+35-8=78 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Aug 04 2010]

MATHEMATICA

s=0; lst={s}; Do[s+=n++ +9; AppendTo[lst, s], {n, 0, 8!, 17}]; lst [From Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 17 2008]

CROSSREFS

Sequence in context: A085366 A173245 A033566 * A071398 A005898 A034957

Adjacent sequences:  A022272 A022273 A022274 * A022276 A022277 A022278

KEYWORD

nonn

AUTHOR

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

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Last modified February 16 14:37 EST 2012. Contains 205930 sequences.