Triangle read by rows: rows = inverse binomial transforms of columns of A309220.

Terms

a(0) =1a(1) =2a(2) =1a(3) =6a(4) =5a(5) =2a(6) =14a(7) =22a(8) =18a(9) =6a(10) =34a(11) =85a(12) =118a(13) =84a(14) =24a(15) =82a(16) =311a(17) =660a(18) =780a(19) =480a(20) =120a(21) =198a(22) =1100a(23) =3380a(24) =5964a(25) =6024a(26) =3240a(27) =720a(28) =478a(29) =3809