Search: id:A022275
Results 1-1 of 1 results found.

%I A022275
%S A022275 0,9,35,78,138,215,309,420,548,693,855,1034,1230,1443,1673,
%T A022275 1920,2184,2465,2763,3078,3410,3759,4125,4508,4908,5325,
%U A022275 5759,6210,6678,7163,7665,8184,8720,9273,9843,10430,11034
%N A022275 n*(17n+1)/2.
%F A022275 a(n)=17*n+a(n-1)-25 (with a(1)=0) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), 
               Nov 13 2009]
%e A022275 For n=2, a(2)=17*2+0-25=9; n=3, a(3)=17*3+9-25=35; n=4, a(4)=17*4+35-25=78 
               [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 13 2009]
%t A022275 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]
%Y A022275 Sequence in context: A003865 A085366 A033566 this_sequence A071398 A005898 
               A034957
%Y A022275 Adjacent sequences: A022272 A022273 A022274 this_sequence A022276 A022277 
               A022278
%K A022275 nonn,new
%O A022275 0,2
%A A022275 N. J. A. Sloane (njas(AT)research.att.com).

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