Row 2 of array in A322770.

A322772

Row 2 of array in A322770.

Terms

    a(0) =2a(1) =9a(2) =70a(3) =801a(4) =12347a(5) =243235a(6) =5908978a(7) =172449180a(8) =5925731200a(9) =235946129714

External references