51925

Appears in sequences

• Structured triakis octahedral numbers (vertex structure 4).at n=24A100171
• Numbers for which the harmonic mean of the nontrivial unitary divisors is an integer.at n=13A335269
• G.f. A(x) satisfies A(x) = 1 + x*A(x)/A(-x*A(x))^4.at n=8A385016
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A385016.at n=53A385020