74415

Appears in sequences

• Fibonacci sequence beginning 0, 11.at n=20A022345
• Triangle read by rows: T(n,k) is the number of involutions of {1,2,...,n} having genus k (see first comment for definition of genus).at n=67A178515
• Expansion of 1/(1 - 2*x - 3*x^2)^(5/2).at n=8A245551