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 A173398 #5 Jun 02 2025 02:41:40 %S A173398 1,1,1,1,1,1,1,1,2,1,1,1,4,2,1,1,1,7,4,3,1,1,1,11,7,9,3,1,1,1,16,11, %T A173398 22,9,4,1,1,1,22,16,46,22,16,4,1,1,1,29,22,86,46,50,16,5,1,1,1,37,29, %U A173398 148,86,130,50,25,5,1 %N A173398 (A007318 + A112468)/2. %C A173398 If first row is omitted,same as A131054. %e A173398 Array starts: %e A173398 1,1,1,1 %e A173398 1,1,2,2 %e A173398 1,1,4,4 %e A173398 1,1,7,7 %Y A173398 Cf. A007318, A112468, A131054 %K A173398 nonn,tabl %O A173398 1,9 %A A173398 _Mark Dols_, Feb 17 2010, Feb 21 2010