44767

Appears in sequences

• Number of numbers which require n iterations of the unitary totient function (A047994) to reach 1.at n=20A225173
• Irregular triangle read by rows: T(n,k) = number of size k subsets of S_n with respect to the symmetries of the square.at n=21A277086
• Irregular triangle read by rows: T(n,k) = number of size k subsets of S_n with respect to the symmetries of the square.at n=31A277086
• Triangle read by rows: T(n,r), 0 <= r <= n, is the number of idempotents of rank r in the twisted planar partition monoid PP_n^tau.at n=40A289620