Antidiagonal sums of array A007754.

Terms

a(0) =1a(1) =2a(2) =4a(3) =11a(4) =41a(5) =195a(6) =1130a(7) =7716a(8) =60599a(9) =537676a(10) =5316162a(11) =57940107a(12) =689965123a(13) =8911606493a(14) =124072525780