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 A243493 #21 Jul 21 2014 03:37:58 %S A243493 1,2,4,3,8,6,5,16,12,10,14,13,11,32,24,20,28,26,22,37,23,34,31,64,48, %T A243493 40,56,52,44,74,46,68,62,76,39,89,61,47,86,101,118,109,127,128,96,80, %U A243493 112,104,88,148,92,136,124,152,78,178,122,94,172,202,236,218,254 %N A243493 Value of Matula-Goebel signature at the fixed points of A069787: a(n) = A127301(A243490(n)). %C A243493 The first duplicate value occurs at n=101, as a(101) = a(129) = 362. The corresponding A014486-indices are A243490(101) = 924 and A243490(129) = 1640, respectively. %H A243493 Antti Karttunen, <a href="/A243493/b243493.txt">Table of n, a(n) for n = 0..525</a> %F A243493 a(n) = A127301(A243490(n)). %F A243493 a(n) = A243491(A243490(n)). %F A243493 For all n >= 0, a(A036256(n)-1) = A007097(n) and a(A036256(n)) = A000079(n+1). %o A243493 (Scheme, two variants) %o A243493 (define (A243493 n) (A127301 (A243490 n))) %o A243493 (define (A243493 n) (A243491 (A243490 n))) %Y A243493 A243494 gives the same terms sorted into ascending order with duplicates removed. %Y A243493 Cf. A243496, A209636, A209637, A069787, A127301, A243490, A243491, A000079, A007097, A036256. %K A243493 nonn,look,hear %O A243493 0,2 %A A243493 _Antti Karttunen_, Jun 07 2014