Column 0 of the matrix square of triangle A167015.
A167142
Column 0 of the matrix square of triangle A167015.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =23a(4) =171a(5) =1770a(6) =23128a(7) =359326a(8) =6397582a(9) =127481106a(10) =2798191975a(11) =66906139414
External references
- oeis: A167142