Column 1 of triangle A138271; also, column 0 of matrix power A138271^2.
A138273
Column 1 of triangle A138271; also, column 0 of matrix power A138271^2.
Terms
- a(0) =1a(1) =2a(2) =10a(3) =78a(4) =798a(5) =9874a(6) =141282a(7) =2273730a(8) =40400466a(9) =782174594a(10) =16339339034a(11) =365507560686
External references
- oeis: A138273