1666000domain: NAppears in sequencesSolution to the Dancing School Problem with 7 girls and n+7 boys: f(7,n).at n=9A079912Solution to the Dancing School Problem with n girls and n+9 boys: f(n,9).at n=6A079928The smallest n-digit number whose last k digits are divisible by k^2 for k = 1..n, otherwise 0 (for n > 1).at n=6A228013