Column 0 of P^2 where triangle P = A136220; also equals column 1 of square array A136217.
A136226
Column 0 of P^2 where triangle P = A136220; also equals column 1 of square array A136217.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =49a(4) =414a(5) =4529a(6) =61369a(7) =996815a(8) =18931547a(9) =412345688a(10) =10143253814a(11) =278322514093
External references
- oeis: A136226