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 A379973 #5 Jan 11 2025 03:59:50 %S A379973 3,3,3,3,10,14,6,8,3,4,8,3,30,11,88,14,43,50,276,17,322,20,23,26,41, %T A379973 29,145,32,823,35,2378,38,41,44,47,50,53,56,59,374,62,65,2386,68,71,74 %N A379973 Least k >= 3 such that A373711(n) is both k-gonal and k-gonal pyramidal. %C A379973 For n <= 46, there is a unique k >= 3 such that A373711(n) is both k-gonal and k-gonal pyramidal. If this were true for all n, A027669 would be the sorted distinct terms of this sequence. %F A379973 A057145(a(n),A379974(n)) = A080851(a(n)-2,A379975(n)-1) = A373711(n). %Y A379973 Cf. A027669, A057145, A080851, A373711, A379974, A379975. %K A379973 nonn,more %O A379973 1,1 %A A379973 _Pontus von Brömssen_, Jan 08 2025