Search: id:A027621
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%I A027621
%S A027621 90,288,700,1440,2646,4480,7128,10800,15730,22176,30420,40768,53550,
%T A027621 69120,87856,110160,136458,167200,202860,243936,290950,344448,
%U A027621 405000,473200,549666,635040,729988,835200,951390,1079296,1219680
%N A027621 n + (n+1)^2 + (n+2)^3 + (n+3)^4.
%H A027621 P. De Geest, <a href="http://www.worldofnumbers.com/sumpower.htm">Palindromic 
               Quasi_Under_Squares of the form n+(n+1)^2</a>
%F A027621 O.g.f.: -16/(-1+x)-24/(-1+x)^5+16/(-1+x)^2-16/(-1+x)^3+18/(-1+x)^4 . 
               - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 22 2008
%o A027621 sage: [i+(i+1)^2+(i+2)^3+(i+3)^4 for i in xrange(0,36)] - Zerinvary Lajos 
               (zerinvarylajos(AT)yahoo.com), Jul 03 2008
%Y A027621 Sequence in context: A044422 A044803 A074213 this_sequence A157888 A158490 
               A066116
%Y A027621 Adjacent sequences: A027618 A027619 A027620 this_sequence A027622 A027623 
               A027624
%K A027621 nonn
%O A027621 0,1
%A A027621 Patrick De Geest (pdg(AT)worldofnumbers.com)

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