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 A247361 #16 Sep 28 2014 15:59:03
%S A247361 1,4,2,6,3,7,5,8,9,10,12,11,21,13,22,14,23,15,25,16,29,17,31,18,32,19,
%T A247361 33,20,35,24,39,26,41,27,42,28,43,30,45,34,49,36,51,37,52,38,53,40,55,
%U A247361 44,59,46,61,47,62,48,63,50,65,54,69,56,71,57,72,58,73,60,75,64,79,66,81,67,82,68,83,70,85,74,89,76,91,77,92,78,93,80,95,84,99
%N A247361 Interleave A000861\{0} and A247359: positive numbers with English name ending in a vowel resp. consonant.
%C A247361 A permutation of the positive integers.
%C A247361 See A247362 for a variant defined on the nonnegative integers.
%F A247361 a(2n)=A247362(2n-1), a(2n-1) = A247362(2n).
%e A247361 Every other term is taken from the set A000861 \ {0} = {onE, twO, threE, fivE, ninE, twelvE, ...} resp. from A247359 = {fouR, siX, seveN, eighT, teN, eleveN, ...}
%Y A247361 Cf. A000861, A247359, A247362.
%K A247361 nonn,word
%O A247361 1,2
%A A247361 _M. F. Hasler_, Sep 14 2014