51953

Appears in sequences

• G.f. satisfies A(x) = (1 + x*A(x)^2)*(1 + x^2*A(x)^2).at n=9A199874
• Expansion of 1/G(1) where G(k) = 1 - (q^k/(1-q^k)) / G(k+1).at n=14A238437
• If n is composite, replace n with the concatenation of its nontrivial divisors, written in decreasing order, each divisor being written in base 10 with its digits in reverse order, otherwise a(n) = n.at n=44A361581
• Irregular triangle read by rows: T(n,k) is the coefficient of x^k in the domination polynomial of the n X n grid graph (n>=1, A104519(n+2)<=k<=n^2).at n=37A378412