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 A090844 #4 Jun 02 2025 00:19:05 %S A090844 1,1,3,1,4,3,1,5,8,3,1,6,15,16,3,1,7,24,45,32,3,1,8,35,96,135,64,3,1, %T A090844 9,48,175,384,405,128,3,1,10,63,288,875,1536,1215,256,3,1,11,80,441, %U A090844 1728,4375,6144,3645,512,3,1,12,99,640,3087,10368,21875,24576,10935,1024,3,1 %N A090844 Square array of numbers read by antidiagonals with T(n,k)=((k+3)(k+1)^n-2*0^n)/(k+1). %C A090844 Rows are inverse binomial transforms of rows of array A090842. %D A090844 L. He, X. Liu and G. Strang, (2003) Trees with Cantor Eigenvalue Distribution. Studies in Applied Mathematics 110 (2), 123-138 %e A090844 Rows begin %e A090844 1 3 3 3 3 ... %e A090844 1 4 8 16 32 ... %e A090844 1 5 15 45 135 ... %e A090844 1 6 24 96 384 ... %e A090844 1 7 35 175 875 ... %K A090844 easy,nonn,tabl %O A090844 0,3 %A A090844 _Paul Barry_, Dec 09 2003