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 A246273 #11 Sep 11 2014 18:30:51 %S A246273 1,2,3,4,8,5,6,24,14,7,10,48,34,26,9,12,120,76,124,20,11,16,168,142, %T A246273 342,54,44,13,18,288,220,1330,90,174,32,15,22,360,322,2196,186,538,64, %U A246273 80,17,28,528,436,4912,246,1572,118,624,74,19,30,840,666,6858,390,2872,208,2400,244,62,21 %N A246273 Transpose of square array A246275. %H A246273 Antti Karttunen, <a href="/A246273/b246273.txt">Table of n, a(n) for n = 1..1275; the first 50 antidiagonals of the array</a> %H A246273 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A246273 a(n) = A246279(n) - 1. %F A246273 As a composition of related permutations: %F A246273 a(n) = A246275(A038722(n)). %F A246273 a(n) = A246676(A054582(n-1)). %e A246273 The top-left corner of the array: %e A246273 1, 2, 4, 6, 10, 12, 16, 18, 22, ... %e A246273 3, 8, 24, 48, 120, 168, 288, 360, 528, ... %e A246273 5, 14, 34, 76, 142, 220, 322, 436, 666, ... %e A246273 7, 26, 124, 342, 1330, 2196, 4912, 6858, 12166, ... %e A246273 9, 20, 54, 90, 186, 246, 390, 550, 712, ... %e A246273 11, 44, 174, 538, 1572, 2872, 5490, 8302, 15340, ... %e A246273 ... %o A246273 (Scheme) (define (A246273 n) (- (A246279 n) 1)) %Y A246273 Inverse permutation: A246274. %Y A246273 Transpose: A246275. %Y A246273 Other related permutations: A038722, A054582, A246675, A246676. %Y A246273 One less than A246279. %Y A246273 Cf. A114881. %K A246273 nonn,tabl %O A246273 1,2 %A A246273 _Antti Karttunen_, Aug 21 2014