A column of triangle A322220; a(n) = A322220(n,1) for n >= 1.

A325153

A column of triangle A322220; a(n) = A322220(n,1) for n >= 1.

Terms

    a(0) =1a(1) =5a(2) =33a(3) =277a(4) =2465a(5) =22149a(6) =199297a(7) =1793621a(8) =16142529a(9) =145282693a(10) =1307544161a(11) =11767897365a(12) =105911076193a(13) =953199685637

External references