51722

Appears in sequences

• Number of ways are there to score a break of n points at snooker. Assuming an infinite number of reds are available, along with the usual six colors, and a break alternates red-color-red-...at n=33A180158
• Row sums of A319935.at n=9A320025
• Number of binary necklaces with n beads and at least two consecutive black beads.at n=19A351359
• G.f. A(x) satisfies A(x) = 1 + x/(1-x^2)^2 * A(x)^2.at n=10A387063