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%I #19 Jun 13 2015 00:51:46
%S 0,32,3080,6720,637032,60383960,131735240,12487111096,1183646396800,
%T 2582274191000,244772352350624,23201836730467360,50617738823727040,
%U 4798027663264052544,454802404774267597320,992208919004971638880,94050938500074310327912
%N Numbers k such that 29*k^2 + 29*k +1 = n^2, n sequence = A104651.
%H <a href="/index/Rec">Index entries for linear recurrences with constant coefficients</a>, signature (1,0,19602,-19602,0,1,-1).
%F a(1)=0, a(2)=32, a(3)=3080, a(4)=19602*a(1)+9800-a(3), a(5)=19602*a(2)+9800-a(2), a(6)=19602*a(3)+9800-a(1), then a(n)=19602*a(n-3)+9800-a(n-6).
%F G.f.: 8*x^2*(4+381*x+455*x^2+381*x^3+4*x^4) / ( (x-1)*(x^6+19602*x^3-1) ). - _R. J. Mathar_, Aug 23 2011
%Y Cf. A104651.
%K nonn,easy
%O 1,2
%A _Pierre CAMI_, Apr 22 2005
%E More terms from _Colin Barker_, Apr 16 2014