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 A059575 #10 Sep 29 2022 02:15:09 %S A059575 1,1,2,1,4,6,1,13,19,23,1,48,87,107,116,1,243,458,635,708,736,1,1517, %T A059575 2967,4239,5163,5533,5659,1,11562,22824,33291,41772,47733,50031,50796, %U A059575 1,103125,204598,301161,385422,452016,497789,515254,521040 %N A059575 The array described in A059513 read by antidiagonals in the direction of construction. %Y A059575 Cf. A000667, A035002, A059216, A059219, A059574. %K A059575 easy,nonn,tabl %O A059575 1,3 %A A059575 _Floor van Lamoen_, Jan 23 2001 %E A059575 Sequence contained two errors corrected by _N. J. A. Sloane_, Jun 14 2005