Column 0 of triangle A152406; also, column 1 of matrix square of A152406.
A152407
Column 0 of triangle A152406; also, column 1 of matrix square of A152406.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =26a(4) =224a(5) =2346a(6) =28516a(7) =391042a(8) =5936376a(9) =98435034a(10) =1765073308a(11) =33962477610a(12) =696914830952
External references
- oeis: A152407