66708domain: NAppears in sequencesa(n) = n^3 + (n+1)^3 + (n+2)^3 + (n+3)^3.at n=24A027603a(n) = 3^(n^2+n) * C(2*n-1 + 1/3^n, n) / (n*3^n + 1).at n=3A159319Number of (n+3) X 7 0..2 matrices with each 4 X 4 subblock idempotent.at n=14A224724a(n) = T(n, 4) with T(n, k) = Sum_{d|k} phi(d)*binomial(n - 1 + k/d, k/d).at n=34A327032