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%I #16 Feb 21 2023 10:38:30
%S 1,5,16,32,64,128,256,512,1024,2048,4096,8192,16384,32768,65536,
%T 131072,262144,524288,1048576,2097152,4194304,8388608,16777216,
%U 33554432,67108864,134217728,268435456,536870912,1073741824,2147483648,4294967296,8589934592
%N Row sums of triangle A132478.
%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (2).
%F a(0) = 1, a(2) = 5, a(n) = 2^(n+2) for n > 1.
%F G.f.: -(1 + 3*x + 6*x^2)/(-1 + 2*x). - _R. J. Mathar_, Nov 14 2007
%F E.g.f.: 4*exp(2*x) - 3*(1 + x). - _Stefano Spezia_, Feb 20 2023
%e a(3) = 32 = sum of row 3 terms of triangle A132478: (4 + 9 + 18 + 1).
%e a(3) = 32 = 2^5.
%Y Cf. A000079, A132478.
%K nonn,easy
%O 0,2
%A _Gary W. Adamson_, Aug 23 2007
%E More terms from _Stefano Spezia_, Feb 20 2023
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