104498

Appears in sequences

• Number of 3-regular maps with 2n vertices on the torus, up to orientation-preserving and orientation-reversing isomorphisms.at n=5A292405
• Solution of the complementary equation a(n) = a(0)*b(n-1) + a(1)*b(n-2) + ... + a(n-1)*b(0) + n, where a(0) = 1, a(1) = 3, b(0) = 2, and (a(n)) and (b(n)) are increasing complementary sequences.at n=9A296225