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 A275916 #13 Aug 31 2016 18:26:57 %S A275916 0,21,112,276,511,708,1063,1491,1990,2561,3205,3920,4437,5272,6180, %T A275916 7159,8211,9334,10123,11366,12682,14069,15528,17060,18663,19772,21495, %U A275916 23291,25158,26443,28430,30490,32621,34824,37100,39447,41052,43519,46059,48670,51354,54109,55986,58861,61809 %N A275916 a(n) = A273059(4n). %C A275916 A275916-A275919 are the four rays in A273059. There is a conjectured recursion for these sequences: see A140101. %H A275916 N. J. A. Sloane and Alois P. Heinz, <a href="/A275916/b275916.txt">Table of n, a(n) for n = 0..7572</a> %Y A275916 Cf. A273059, A275915, A275917-A275919. %K A275916 nonn %O A275916 0,2 %A A275916 _N. J. A. Sloane_, Aug 28 2016