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 A331441 #7 Jan 22 2020 12:47:50 %S A331441 1,2,6,3,14,7,24,4,33,15,44,8,55,25,66,5,77,34,85,16,96,45,107,9,118, %T A331441 56,129,26,140,67,151,162,173,78,184,35,195,86,206,17,217,97,228,46, %U A331441 248,108,264,10,305,119,336,57,364,130,392,27,423,141,477,68,498 %N A331441 Inverse permutation to A331440. %H A331441 Rémy Sigrist, <a href="/A331441/b331441.txt">Table of n, a(n) for n = 1..10000</a> %H A331441 Rémy Sigrist, <a href="/A331441/a331441.gp.txt">PARI program for A331441</a> %o A331441 (PARI) See Links section. %Y A331441 Cf. A331440. %K A331441 nonn,base %O A331441 1,2 %A A331441 _N. J. A. Sloane_, Jan 22 2020 %E A331441 More terms from _Rémy Sigrist_, Jan 22 2020