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A061319 Column 4 of A061315. 3

%I

%S 0,1,10,76,430,1870,6601,19810,52326,124785,273790,560626,1083160,

%T 1991626,3509065,5957260,9789076,15628185,24317226,36975520,55067530,

%U 80483326,115632385,163552126,228032650,313759225,426474126,573159510

%N Column 4 of A061315.

%H <a href="/index/Rec#order_09">Index entries for linear recurrences with constant coefficients</a>, signature (9,-36,84,-126,126,-84,36,-9,1).

%F a(n) =A061318(n)/4 =sqrt(A061320(n)-A061318(n)).

%F G.f. -x*(1+x+22*x^2+22*x^3+22*x^4+x^5+x^6) / (x-1)^9. - _R. J. Mathar_, Aug 11 2012

%F a(n) = n*(n+1)*(n^2+n+4)*(n^4+2*n^3+5*n^2+4*n+36)/576 . _R. J. Mathar_, Aug 11 2012

%K nonn,easy

%O 0,3

%A _Henry Bottomley_, Apr 24 2001

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Last modified October 26 08:00 EDT 2021. Contains 348267 sequences. (Running on oeis4.)