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 A083052 #8 Jun 16 2019 08:07:11 %S A083052 1,6,15,33,60,107,176,283,463,732,1156,1773,2702,4170,6333,9611,14365, %T A083052 21842,32281,48041,71690,106136,158196,232380,340846,504318,740949, %U A083052 1089909,1590748,2348540,3411262,4978297,7278002,10600284,15494846 %N A083052 Main diagonal of table A083050. %F A083052 a(n) = T(n, n), where T(n, 0) = floor(n*x/(x-1)) + 1, T(n, k+1) = ceiling(x*T(n, k)), for n >= 0, k >= 0, with x=sqrt(2). %Y A083052 Cf. A083044, A083047, A083050, A083053. %K A083052 nonn %O A083052 0,2 %A A083052 _Paul D. Hanna_, Apr 18 2003