Matrix square of triangle U = A136228, read by rows.

Terms

a(0) =1a(1) =2a(2) =1a(3) =10a(4) =8a(5) =1a(6) =75a(7) =76a(8) =14a(9) =1a(10) =753a(11) =888a(12) =196a(13) =20a(14) =1a(15) =9534a(16) =12542a(17) =3087a(18) =370a(19) =26a(20) =1a(21) =146353a(22) =209506a(23) =55552a(24) =7320a(25) =598a(26) =32a(27) =1a(28) =2647628a(29) =4058806