Row sums of array A158777.

Terms

a(0) =1a(1) =2a(2) =5a(3) =16a(4) =89a(5) =686a(6) =5917a(7) =54860a(8) =588401a(9) =7370074a(10) =103522421a(11) =1573237832a(12) =25869057865a(13) =462768222086