84624

Appears in sequences

• Number T(n,k) of endofunctions f on [n] satisfying f^3(i) = i for all i in [k]; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=40A245958
• Number of endofunctions f on [2n] satisfying f^3(i) = i for all i in [n].at n=4A245959
• Number A(n,k) of endofunctions f on [2n] satisfying f^k(i) = i for all i in [n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=32A246070
• Number of positive solutions to (x_1)^2 + (x_2)^2 + ... + (x_10)^2 <= n^2.at n=3A341429