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 A283994 #9 Mar 20 2017 23:22:05 %S A283994 0,1,2,1,3,2,4,3,4,5,5,6,6,7,8,9,7,10,8,11,12,13,9,14,10,15,16,17,11, %T A283994 18,12,19,20,21,22,23,13,24,25,26,14,27,15,28,29,30,16,31,32,33,34,35, %U A283994 17,36,18,37,38,39,19,40,20,41,42,43,21,44,22,45,46,47,23,48,24,49,50,51,25,52,26,53,54,55,27,56,57,58,59,60,28,61,29,62,63,64,30 %N A283994 a(1) = 0, and for n > 1, a(n) = position of Stern polynomial B(n,x) among the irreducible/reducible Stern polynomials. %C A283994 Each n > 0 occurs exactly twice. %H A283994 Antti Karttunen, <a href="/A283994/b283994.txt">Table of n, a(n) for n = 1..10001</a> %F A283994 If A283991(n) = 1 then a(n) = A283992(n), otherwise a(n) = A283993(n). %o A283994 (Scheme) (define (A283994 n) (if (= 1 (A283991 n)) (A283992 n) (A283993 n))) %Y A283994 Cf. A125184, A260443, A283991, A283992, A283993. %Y A283994 Cf. also A066136. %K A283994 nonn %O A283994 1,3 %A A283994 _Antti Karttunen_, Mar 20 2017