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 A270297 #18 Feb 04 2021 18:12:23 %S A270297 28,56,112,196,224,308,364,392,448,476,532,616,644,728,784,812,868, %T A270297 896,952,1036,1064,1148,1204,1232,1288,1316,1372,1456,1484,1568,1624, %U A270297 1652,1708,1736,1792,1876,1904,1988,2044,2072,2128,2156,2212,2296,2324,2408,2464 %N A270297 Numbers which are representable as a sum of seven but no fewer consecutive nonnegative integers. %H A270297 Ray Chandler, <a href="/A270297/b270297.txt">Table of n, a(n) for n = 1..10000</a> %F A270297 A163169(a(n)) = 7. - _Ray Chandler_, Mar 22 2016 %F A270297 a(n) = 28*A229829(n). - _Hugo Pfoertner_, Feb 04 2021 %e A270297 28 = 1 + 2 + 3 + 4 + 5 + 6 + 7; %e A270297 35 = 2 + 3 + 4 + 5 + 6 + 7 + 8 = 17 + 18 (not in sequence); %e A270297 56 = 5 + 6 + 7 + 8 + 9 + 10 + 11; %e A270297 112 = 13 + 14 + 15 + 16 + 17 + 18 + 19. %Y A270297 Cf. A138591, A229829, A270296, A270298, A270299, A270300, A270301, A270302, A270303. %K A270297 nonn %O A270297 1,1 %A A270297 _Martin Renner_, Mar 14 2016