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 A371999 #7 Apr 21 2024 14:29:53 %S A371999 1,2,4,10,36,219,2778,87238,7310200,1729159267,1189189497342, %T A371999 2549864969632543,17220185517831384922,394769893681270492415501, %U A371999 30978809768092841795236288310,8707079257583213762665388798383646,9231279352362932208302062064694669246688 %N A371999 Sums of antidiagonals of A372001. %Y A371999 Cf. A372001. %K A371999 nonn %O A371999 0,2 %A A371999 _Peter Luschny_, Apr 21 2024