56652domain: NAppears in sequencesNumbers such that the digital sums in bases 3, 4, 5, 6 and 7 all are equal.at n=29A135129a(n) = n! * Sum_{k=1..n-1} (-1)^(k+1) * n^(n-k-2) / (n-k-1)!.at n=6A347994