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 A278983 #13 May 13 2021 13:46:15 %S A278983 1,12,123,312,1234,1423,3124,3412,4123,12345,12534,14235,14523,15234, %T A278983 31245,31524,34125,34512,35124,41235,41523,45123,51234,51423,53412, %U A278983 123456,123645,125346,125634,126345,142356,142635,145236,145623,146235,152346,152634 %N A278983 List of Andre permutations of the second kind. %C A278983 The permutations are encoded in decimal, hence the keyword base. - _Rémy Sigrist_, May 13 2021 %H A278983 Rémy Sigrist, <a href="/A278983/b278983.txt">Table of n, a(n) for n = 1..9679</a> %H A278983 Dominique Foata and Guo-Niu Han, <a href="http://arxiv.org/abs/1601.04371">André Permutation Calculus; a Twin Seidel Matrix Sequence</a>, arXiv:1601.04371 [math.CO], 2016. %H A278983 Rémy Sigrist, <a href="/A278983/a278983.gp.txt">PARI program for A278983</a> %o A278983 (PARI) See Links section. %Y A278983 Cf. A000111, A008282, A278982. %K A278983 nonn,base %O A278983 1,2 %A A278983 _N. J. A. Sloane_, Dec 03 2016 %E A278983 More terms from _Rémy Sigrist_, May 13 2021