Triangle whose (i,j)-th entry is binomial(i,j)*9^(i-j)*7^j.

Terms

a(0) =1a(1) =9a(2) =7a(3) =81a(4) =126a(5) =49a(6) =729a(7) =1701a(8) =1323a(9) =343a(10) =6561a(11) =20412a(12) =23814a(13) =12348a(14) =2401a(15) =59049a(16) =229635a(17) =357210a(18) =277830a(19) =108045a(20) =16807a(21) =531441a(22) =2480058a(23) =4822335a(24) =5000940a(25) =2917215a(26) =907578a(27) =117649a(28) =4782969a(29) =26040609