Matrix square of triangle A107721, read by rows.

Terms

a(0) =1a(1) =2a(2) =1a(3) =12a(4) =4a(5) =1a(6) =114a(7) =32a(8) =6a(9) =1a(10) =1446a(11) =364a(12) =62a(13) =8a(14) =1a(15) =22722a(16) =5276a(17) =854a(18) =102a(19) =10a(20) =1a(21) =424302a(22) =92332a(23) =14466a(24) =1664a(25) =152a(26) =12a(27) =1a(28) =9168162a(29) =1889012