198940

Appears in sequences

• 4-parking triangle T(r, i, 4) read by rows: T(r, i, k) = (r + 1)^(i-1)*binomial(k*(r + 1) + r - i - 1, r - i) with k = 4 and 0 <= i <= r.at n=24A329060
• a(n) = (1/3)*n^5 + (1/2)*n^4 + (1/6)*n^3.at n=14A373561