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 A244984 #8 Jul 22 2014 10:24:36 %S A244984 1,2,3,5,4,9,14,6,23,37,10,58,8,7,90,143,15,13,225,24,355,563,12,894, %T A244984 17,38,1426,20,60,2277,3643,19,31,5839,96,9398,15155,16,27,24518,11, %U A244984 39758,50,153,64607,42,242,80,105250,30,171874,281237,26 %N A244984 Permutation of natural numbers: a(n) = A243283(A122111((2*n)-1)). %H A244984 <a href="/index/Per#IntegerPermutation">Index entries for sequences that are permutations of the natural numbers</a> %F A244984 a(n) = A243283(A122111((2*n)-1)). %F A244984 a(n) = A243283(A105560((2*n)-1) * A243505(n)). %F A244984 For all n >= 1, a(A006254(n)) = A244986(n+1). %o A244984 (Scheme) (define (A244984 n) (A243283 (A122111 (-1+ (* 2 n))))) %Y A244984 Inverse: A244983. %Y A244984 Cf. A122111, A243283, A244981-A244982, A243505-A243506, A243065-A243066, A006254, A244986. %K A244984 nonn %O A244984 1,2 %A A244984 _Antti Karttunen_, Jul 21 2014