482671466

Appears in sequences

• a(n) = Sum_{k=1..n} (2*k)!.at n=5A138524
• Array read by antidiagonals: T(m,n) = Sum(1<=i<=m) ( n + 2(i-1) )!at n=26A211368
• Partial sums of A005165.at n=12A341900