81739domain: NAppears in sequencesNumerators of Integral_{x=0..1} P(n, x)^3 with P(n, x) = Sum_{k=0..n} (-1)^(n-k)* Stirling2(n, k)*k!*x^k.at n=7A291449One of the two successive approximations up to 2^n for 2-adic integer sqrt(-7). This is the 3 (mod 4) case.at n=15A318961Numbers k such that 399*2^k+1 is prime.at n=41A323044