1699219

Properties

Appears in sequences

• Triangular array: T(n,k) = T(n,n) = 1, T(n,k) = 5*T(n-1, k-1) + 2*T(n-1, k), read by rows.at n=52A119727
• Expansion of 1/(1 - x*Product_{k>=1} (1 + x^(2*k-1))).at n=24A302017
• Prime numbersat n=128082