Triangle that arise in the study of Fekete polynomials.

Terms

a(0) =1a(1) =-2a(2) =10a(3) =16a(4) =-184a(5) =456a(6) =-272a(7) =5776a(8) =-30736a(9) =55504a(10) =7936a(11) =-284288a(12) =2555008a(13) =-8998016a(14) =13801600a(15) =-353792a(16) =20594432a(17) =-280444416a(18) =1567885056a(19) =-4267790592a(20) =5960135424a(21) =22368256a(22) =-2093148160a(23) =40551058432a(24) =-325702463488