62990928000domain: NAppears in sequencesNumber of words (over an alphabet of size 26) of length n with all different letters.at n=8A106793Product of 8 consecutive integers. a(n) = RisingFactorial(n, 8).at n=19A239035a(n) = Product_{k = 1+n-floor(n/3) .. n} k.at n=25A254865E.g.f. satisfies A(x) = -log(1 - x * exp(2 * A(x))).at n=9A357392