Antidiagonal sums of square table A086629.

Terms

a(0) =1a(1) =2a(2) =4a(3) =10a(4) =29a(5) =92a(6) =310a(7) =1088a(8) =3931a(9) =14518a(10) =54551a(11) =207856a(12) =801202a(13) =3118532a(14) =12239732a(15) =48385852a(16) =192483953a(17) =769974110a(18) =3095236066a(19) =12497442266a(20) =50660112478a(21) =206093561590a(22) =841151382755