Column 1 of triangle T=A121395, where column k of T equals column k of T^(2^k) shift down 1 row.
A121396
Column 1 of triangle T=A121395, where column k of T equals column k of T^(2^k) shift down 1 row.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =16a(5) =75a(6) =594a(7) =8420a(8) =212790a(9) =9542280a(10) =763184598a(11) =109735708579
External references
- oeis: A121396