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 A075061 #8 Nov 17 2014 16:46:14 %S A075061 2,3,4,7,8,9,13,14,15,16,61,62,63,64,65,61,62,63,64,65,66,421,422,423, %T A075061 424,425,426,427,841,842,843,844,845,846,847,848,2521,2522,2523,2524, %U A075061 2525,2526,2527,2528,2529,2521,2522,2523,2524,2525,2526,2527,2528,2529 %N A075061 Triangle in A075059 read by rows. %F A075061 T(n,k+1)=T(n,k)+1. T(n,0)=A075059(n). - _R. J. Mathar_, Mar 01 2007 %e A075061 2; %e A075061 3 4; %e A075061 7 8 9; %e A075061 13 14 15 16; %e A075061 61 62 63 64 65; %e A075061 61 62 63 64 65 66; %e A075061 ... %Y A075061 Cf. A075059, A060401, A075062. %K A075061 nonn,tabl %O A075061 1,1 %A A075061 _Amarnath Murthy_, Sep 08 2002 %E A075061 More terms from _R. J. Mathar_, Mar 01 2007