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 A062815 #18 Mar 26 2019 11:50:58
%S A062815 1,9,90,1114,16739,296675,6061476,140279204,3627063605,103627063605,
%T A062815 3242055440326,110235260819398,4047611646518687,159615707204330911,
%U A062815 6728024062917221536,301875929242270047392,14364960381309995038401
%N A062815 a(n) = Sum_{i=1..n} i^(i+1).
%H A062815 Seiichi Manyama, <a href="/A062815/b062815.txt">Table of n, a(n) for n = 1..385</a>
%t A062815 Accumulate[#^(#+1)&/@Range[17]] (* _Harvey P. Dale_, Mar 18 2011 *)
%o A062815 (PARI) a(n) = sum(i=1, n, i^(i+1)); \\ _Michel Marcus_, Mar 26 2019
%Y A062815 Cf. A226065, A226140.
%Y A062815 Partial sums of A007778. - _Michel Marcus_, Mar 26 2019
%K A062815 nonn,easy
%O A062815 1,2
%A A062815 _Olivier Gérard_, Jun 23 2001
%E A062815 Definition simplified by _Jon E. Schoenfield_, Nov 29 2008