84245

Appears in sequences

• Number of unlabeled graphs with n nodes and degree >= 3.at n=9A007111
• Number of ordered pairs of endofunctions (f,g) on a set of n elements satisfying g(f(x)) = f(f(f(x))).at n=5A239750
• Number A(n,k) of pairs of endofunctions f, g on [n] satisfying g^k(f(i)) = f(i) for all i in [n]; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=26A245980
• Number of pairs of endofunctions f, g on [n] satisfying g^7(f(i)) = f(i) for all i in [n].at n=5A245984
• Numbers n such that A307042(n) = Sum_{k=1..n} esigma(k) is divisible by n, where esigma(k) is sum of exponential divisors of k (A051377).at n=12A307043