Triangle of coefficients in expansion of (x+1)*(x+3)*...*(x + 2n - 1) in rising powers of x.

Terms

a(0) =1a(1) =1a(2) =1a(3) =3a(4) =4a(5) =1a(6) =15a(7) =23a(8) =9a(9) =1a(10) =105a(11) =176a(12) =86a(13) =16a(14) =1a(15) =945a(16) =1689a(17) =950a(18) =230a(19) =25a(20) =1a(21) =10395a(22) =19524a(23) =12139a(24) =3480a(25) =505a(26) =36a(27) =1a(28) =135135a(29) =264207