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Partial sums of squares of A115291(n).
2

%I #9 Jun 13 2015 00:52:03

%S 1,17,66,130,194,258,322,386,450,514,578,642,706,770,834,898,962,1026,

%T 1090,1154,1218,1282,1346,1410,1474,1538,1602,1666,1730,1794,1858,

%U 1922,1986,2050,2114,2178,2242,2306,2370,2434,2498,2562,2626,2690,2754,2818

%N Partial sums of squares of A115291(n).

%C Central coefficients of number triangle A115292.

%H <a href="/index/Rec#order_02">Index entries for linear recurrences with constant coefficients</a>, signature (2,-1).

%F a(n)=sum{k=0..n, (sum{j=0..k, C(3, j)})^2}; a(n)=A115292(2n, n).

%t Join[{1, 17}, Range[66, 7000, 64]] (* _Vladimir Joseph Stephan Orlovsky_, Jul 12 2011 *)

%K easy,nonn

%O 0,2

%A _Paul Barry_, Jan 19 2006