42807domain: NAppears in sequencesNumber of terms in 6th derivative of a function composed with itself n times.at n=17A022816Numbers n such that n | 7^n + 6^n + 5^n.at n=24A057234a(n) = number of (0,1) matrices of size n X n whose determinants are k, where -L <= k <= +L and L = A003432(n).at n=21A094813