T(n,n), array T given by A047010.

Terms

a(0) =1a(1) =1a(2) =3a(3) =9a(4) =31a(5) =111a(6) =403a(7) =1488a(8) =5559a(9) =20932a(10) =79333a(11) =302277a(12) =1156703a(13) =4442257a(14) =17112720a(15) =66096604a(16) =255878503a(17) =992570025a(18) =3857092836a(19) =15012261225a(20) =58512405321a(21) =228352024155a(22) =892205043527