Triangle read by rows: coefficients of the polynomials given by KummerU(-n, 1 - n - x, 3).

Terms

a(0) =1a(1) =3a(2) =1a(3) =9a(4) =7a(5) =1a(6) =27a(7) =38a(8) =12a(9) =1a(10) =81a(11) =192a(12) =101a(13) =18a(14) =1a(15) =243a(16) =969a(17) =755a(18) =215a(19) =25a(20) =1a(21) =729a(22) =5115a(23) =5494a(24) =2205a(25) =400a(26) =33a(27) =1a(28) =2187a(29) =29322