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 A318894 #5 Sep 28 2018 10:30:41 %S A318894 1,6,10,28,36,66,78,120,136,190,276,406,496,528,666,820,946,1128,1378, %T A318894 1770,1830,2016,2080,2278,2556,2628,3160,3486,3828,3916,4656,5050, %U A318894 5356,5778,5886,6328,8128,8256,8646,9316,9730,11026,11476,12246,13366,14028,14878,15576,16110,16290,16836,17578,18336,18528,19306,19900,22366 %N A318894 Positions of terms > 1 in A205007, or equally, where A205006(n) != n. %C A318894 It seems that A205007(a(n)) = 2 and moreover, apart from the initial 1, the sequence seems to be a subsequence of even triangular numbers, A014494. %Y A318894 Cf. A014494, A205006, A205007. %K A318894 nonn %O A318894 1,2 %A A318894 _Antti Karttunen_, Sep 28 2018