369194641

Properties

Appears in sequences

• a(n) = 3*n*a(n-1) + 1, a(0) = 1.at n=8A010845
• Triangle read by rows: T(n, k) = n! * 3^k * hypergeom([-k], [-n], 1/3).at n=44A375447
• Prime numbersat n=19777571