230011

Appears in sequences

• a(n) = 8*n^4 + 9*n^2 + 2.at n=13A083196
• Pseudoprimes to base 4, written in base 4.at n=22A262101
• G.f. satisfies A(x) = 1 + x * A(x * (1 + x^3)).at n=20A360886