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 A047755 #9 Mar 07 2020 01:21:19 %S A047755 0,0,1,5,26,133,708,3861,21604,123266,715221,4206956,25032840, %T A047755 150413348,911379384,5562367173,34164355848,211015212580, %U A047755 1309815397995,8166460799805,51120054233490,321156223592865,2024257417812240,12797201858645100 %N A047755 a(n) = A047752(12n+5). %C A047755 Also A047754(4n+1). The proof is elementary and involves reducing both expressions via the various linear expansions with A001764, A047753, A047751 and A047749 which are found in these sequences. - _R. J. Mathar_, Oct 18 2008 %K A047755 nonn %O A047755 0,4 %A A047755 _N. J. A. Sloane_ %E A047755 Edited by _N. J. A. Sloane_, Jan 17 2009 at the suggestion of _R. J. Mathar_