Triangle read by rows giving coefficients in Gould's polynomials for counting fountains of coins.

Terms

a(0) =1a(1) =1a(2) =-1a(3) =1a(4) =-3a(5) =2a(6) =1a(7) =-6a(8) =17a(9) =-18a(10) =1a(11) =-10a(12) =59a(13) =-170a(14) =168a(15) =1a(16) =-15a(17) =145a(18) =-765a(19) =1954a(20) =-1920a(21) =1a(22) =-21a(23) =295a(24) =-2415a(25) =11224a(26) =-27084a(27) =25920a(28) =1a(29) =-28