The row sums of triangle A167557.

A167559

The row sums of triangle A167557.

Terms

    a(0) =1a(1) =5a(2) =46a(3) =598a(4) =10056a(5) =207960a(6) =5111856a(7) =145721520a(8) =4728528000a(9) =172134253440

External references