2054353domain: NAppears in sequencesa(1)=1, a(n) = n*8^(n-1) + a(n-1).at n=6A014921Digits 1..n in strict descending order n..1 interpreted in base n+1.at n=6A051846a(n) = 1 + 2*n + 3*n^2 + 4*n^3 + 5*n^4 + 6*n^5 + 7*n^6.at n=8A113532a(1) = 7; for n>1, a(n) = 8 * a(n-1) + 8 - n.at n=6A353099