1073741764domain: NAppears in sequencesSecond-order Eulerian numbers: a(n) = 2^n - 2*n.at n=30A005803Records in A101119, which forms the nonzero differences of A006519 and A003484.at n=26A101120a(n) = 4^n - 4*n.at n=15A107584E.g.f.: (e^x - x)^2.at n=30A130102Partial sums of A000918, starting from index 1.at n=28A145654