227094

Appears in sequences

• Number of 5-tuples of different integers from [ 1,n ] with no common factors among triples.at n=38A015646
• Triangle T(n, k) = Fibonacci(2*k)*T(n-1, k) + Fibonacci(2*(n-k+1))*T(n-1, k-1), with T(n, 1) = T(n, n) = 1, read by rows.at n=24A141688