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 A322640 #11 Dec 27 2018 07:59:13
%S A322640 0,1,8,9,22,30,31,43,65,71,73,74,106,114,136,144,145,148,177,197,220,
%T A322640 242,250,251,253,254,316,325,345,368,386,390,398,399,450,451,463,522,
%U A322640 547,565,569,587,595,596,598,638,702,704,736,766,775,818,840,841,848,849,914,953
%N A322640 Numbers that are sums of consecutive centered heptagonal numbers (A069099).
%H A322640 Wikipedia, <a href="https://en.wikipedia.org/wiki/Centered_heptagonal_number">Centered heptagonal number</a>
%t A322640 terms = 58;
%t A322640 nmax = 17; kmax = 8; (* empirical *)
%t A322640 T = Table[(7 n^2 - 7 n + 2)/2, {n, 1, nmax}];
%t A322640 Union[{0}, T, Table[k MovingAverage[T, k], {k, 2, kmax}] // Flatten][[1 ;; terms]] (* _Jean-François Alcover_, Dec 27 2018 *)
%Y A322640 Cf. A004126, A069099, A152043, A322610, A322611, A322636, A322638, A320728.
%K A322640 nonn
%O A322640 1,3
%A A322640 _Ilya Gutkovskiy_, Dec 21 2018