41115

Appears in sequences

• Number of factorable subsets of a 1 X n uniform grid.at n=19A057765
• McKay-Thompson series of class 20b for Monster.at n=26A058557
• a(n) = 2*a(n-1) - a(n-2) + a([n/2]), where a(0) = 1, a(1) = 1, a(2) = 1.at n=37A298414