28172

Appears in sequences

• Structured disdyakis triacontahedral numbers (vertex structure 11).at n=11A100158
• Number of length n+5 0..1 arrays with no three disjoint pairs in any consecutive six terms having the same sum.at n=17A248441
• Number of cyclic subgroups of the group GL(2, Z(n)), counting conjugates as distinct.at n=25A316560
• E.g.f. satisfies A(x) = (1 + (exp(x) - 1) * A(x))^2.at n=5A377716