68476

Appears in sequences

• Numbers k such that if x = sigma(k) + tau(k) - k then k = sigma(x) + tau(x) - x.at n=31A238226
• a(n) = 2*(3*n+1)*(9*n+8).at n=35A304506
• Greater members of dihedral amicable pairs: numbers (m, k) such that t(m) = t(k) = m + k, where t(k) = sigma(k) + d(k).at n=10A322254
• Number of asymmetric multidimensional n-ominoes with cell centers determining n-3 space.at n=6A355056