26149domain: NAppears in sequencesa(0)=4, a(1)=0, a(2)=0, a(3)=3; thereafter a(n) = a(n-3) + a(n-4).at n=51A050443Nearest integer to log(n!)^(1 + log(log(1 + n))).at n=33A062476a(n) = 13*(2^n - 1) - 3*n^2 - 9*n.at n=10A257448Half thrice the previous number, rounded down, plus 1, starting with 6.at n=20A302748