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 A280236 #21 Dec 31 2016 01:28:18 %S A280236 2,6,8,12,20,24,28,30,32,36,40,44,48,50,54,56,60,64,66,70,72,80,88,90, %T A280236 96 %N A280236 Numbers n such that A278981(n) < A278981(m) for all m > n (excluding values of m where A278981(m) = 0). %C A280236 It is not necessary to check A278981(m) for all values of m > n (of which there are infinitely many). One need check only values of a(m) where m^2 + m + 1 <= A278981(n), due to the lower bound of A278981(m). %C A280236 It appears that all members in this sequence are even, although it is possible that some members could be odd. %C A280236 It appears that, apart from 2, all members in this sequence appear in A280270. If this is the case, all members in this sequence must be even. %e A280236 6 is a member of this sequence as A278981(6) = 57, which is which is less than all the terms in A278981 which succeed it. %e A280236 One need check only values of a(m) where m^2 + m + 1 <= 57. In this case, only m=7 needs to be checked, and A278981(7) = 906, with 906 >= 57. Thus A278981(6) < A278981(m) for all m > 6. %Y A280236 Cf. A278981, A280270. %K A280236 nonn,base,more %O A280236 1,1 %A A280236 _Ely Golden_, Dec 29 2016