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 A077819 #12 Dec 16 2024 14:41:17 %S A077819 0,0,1,0,1,3,2,1,5 %N A077819 a(n) is the exponent of 3 in the denominator of the probability P(n) of the occurrence of a 3-dimensional self-trapping walk of length n. %D A077819 See under A077818. %F A077819 P(n) = A077818(n) / ( 5^(n-1) * 3^a(n) * 2^A077820(n) ). %e A077819 See under A077818. %Y A077819 Cf. A077818, A077820, A377161, A377162, A378903. %K A077819 nonn,frac,more %O A077819 11,6 %A A077819 _Hugo Pfoertner_, Nov 17 2002