Triangle U, read by rows, where column k of U^(j+1) = column j of P^(3k+1) for j>=0, k>=0 and P=A136220.

A136228

Triangle U, read by rows, where column k of U^(j+1) = column j of P^(3k+1) for j>=0, k>=0 and P=A136220.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =1a(6) =15a(7) =24a(8) =7a(9) =1a(10) =108a(11) =198a(12) =63a(13) =10a(14) =1a(15) =1036a(16) =2116a(17) =714a(18) =120a(19) =13a(20) =1a(21) =12569a(22) =28052a(23) =9884a(24) =1725a(25) =195a(26) =16a(27) =1a(28) =185704a(29) =446560

External references