This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A134508 #4 Feb 13 2018 15:54:03 %S A134508 1,2,5,11,22,42,77,138,243,423,730,1252,2137,3634,6161,10419,17582, %T A134508 29614,49797,83610,140191,234767,392690,656136,1095217,1826402, %U A134508 3043037,5065883,8426758,14006898,23265725,38618922,64062987,106206519,175972426 %N A134508 Row sums of triangle A134507. %H A134508 <a href="/index/Rec#order_06">Index entries for linear recurrences with constant coefficients</a>, signature (4,-4,-2,4,0,-1). %F A134508 a(n) = A000071(n+2) + A029907(n) - n. [Corrected by _Charles R Greathouse IV_, Feb 13 2018] %e A134508 a(4) = 11 = sum of row 4 terms of triangle A134507 = (4 + 5 + 1 + 1). %e A134508 a(4) = 11 = A000071(6) + A029907(4) - 4 = (7 + 8 - 4). %o A134508 (PARI) a(n)=fibonacci(n+2) + ((n+4)*fibonacci(n)+2*n*fibonacci(n-1))/5 - n - 1 \\ _Charles R Greathouse IV_, Feb 13 2018 %Y A134508 Cf. A134507, A000071, A029907. %K A134508 nonn,easy %O A134508 1,2 %A A134508 _Gary W. Adamson_, Oct 28 2007 %E A134508 More terms from _Charles R Greathouse IV_, Feb 13 2018