Search: id:A086601
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%I A086601
%S A086601 1,4,16,49,121,256,484,841,1369,2116,3136,4489,6241,8464,11236,14641,
%T A086601 18769,23716,29584,36481,44521,53824,64516,76729,90601,106276,123904,
%U A086601 143641,165649,190096,217156,247009,279841,315844,355216,398161
%N A086601 Triangular numbers + 1 squared.
%F A086601 (A000217(n)+1)^2
%F A086601 (binomial(4+n,2)-binomial(2+n,1))^2. - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), 
               May 30 2006
%F A086601 a(n) = A000124(n)^2. - Omar E. Pol (info(AT)polprimos.com), Oct 30 2007
%e A086601 a(5)=(t(5)+1)^2=16^2=256
%p A086601 [seq((binomial(4+n,2)-binomial(2+n,1))^2,n=-2..39)]; - Zerinvary Lajos 
               (zerinvarylajos(AT)yahoo.com), May 30 2006
%p A086601 with (combinat):a:=n->sum(fibonacci(4,i), i=0..n): seq(a(n)+1, n=0..35); 
               - Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 25 2008
%o A086601 (PARI) w=vector(40,i,(t(i)+1)^2)
%Y A086601 Cf. A000124.
%Y A086601 Sequence in context: A034918 A119003 A119005 this_sequence A114185 A085697 
               A121184
%Y A086601 Adjacent sequences: A086598 A086599 A086600 this_sequence A086602 A086603 
               A086604
%K A086601 nonn
%O A086601 0,2
%A A086601 Jon Perry (perry(AT)globalnet.co.uk), Jul 23 2003

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