Triangle whose (i,j)-th entry is binomial(i,j)*3^(i-j)*9^j.

Terms

a(0) =1a(1) =3a(2) =9a(3) =9a(4) =54a(5) =81a(6) =27a(7) =243a(8) =729a(9) =729a(10) =81a(11) =972a(12) =4374a(13) =8748a(14) =6561a(15) =243a(16) =3645a(17) =21870a(18) =65610a(19) =98415a(20) =59049a(21) =729a(22) =13122a(23) =98415a(24) =393660a(25) =885735a(26) =1062882a(27) =531441a(28) =2187a(29) =45927