Matrix square of triangle A136220, read by rows.

Terms

a(0) =1a(1) =2a(2) =1a(3) =8a(4) =4a(5) =1a(6) =49a(7) =26a(8) =6a(9) =1a(10) =414a(11) =232a(12) =54a(13) =8a(14) =1a(15) =4529a(16) =2657a(17) =629a(18) =92a(19) =10a(20) =1a(21) =61369a(22) =37405a(23) =9003a(24) =1320a(25) =140a(26) =12a(27) =1a(28) =996815a(29) =627435