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 A038286 #7 Jul 08 2025 22:16:34 %S A038286 1,8,8,64,128,64,512,1536,1536,512,4096,16384,24576,16384,4096,32768, %T A038286 163840,327680,327680,163840,32768,262144,1572864,3932160,5242880, %U A038286 3932160,1572864,262144,2097152,14680064,44040192,73400320 %N A038286 Triangle whose (i,j)-th entry is binomial(i,j)*8^(i-j)*8^j. %D A038286 B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121. %K A038286 nonn,tabl,easy %O A038286 0,2 %A A038286 _N. J. A. Sloane_