164726domain: NAppears in sequencesa(n) = n*(n + 1)*(13*n^2 + 13*n - 14)/24.at n=23A264888Let n have j digits {d_j, d_(j-1), ..., d_2, d_1}. Sequence lists numbers n such that n = d_j^b_j + d_(j-1)^b_(j-1) + ... + d_2^b_2 + d_1^b_1 for some permutation {b_j, b_(j-1), ..., b_2, b_1} of the digits.at n=14A276170