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 A367510 #8 Feb 06 2024 18:09:50 %S A367510 2,34,1064,90707,11889152,2617716748,781252097152,320058240313028, %T A367510 167630129865661440,110581271670766466804,89116503268963605948416, %U A367510 86403662577880534613564934,99045780329060163714773254144 %N A367510 a(n) = Sum_{d|n} (n*d+1)^n. %F A367510 a(n) = Sum_{k=0..n} n^k * binomial(n,k) * sigma_k(n). %t A367510 Table[Total[(n*Divisors[n]+1)^n],{n,20}] (* _Harvey P. Dale_, Feb 06 2024 *) %o A367510 (PARI) a(n) = sumdiv(n, d, (n*d+1)^n); %Y A367510 Cf. A163190, A367509. %K A367510 nonn %O A367510 1,1 %A A367510 _Seiichi Manyama_, Nov 21 2023