First differences of A260443.

Terms

a(0) =1a(1) =1a(2) =3a(3) =-1a(4) =13a(5) =-3a(6) =15a(7) =-23a(8) =83a(9) =-15a(10) =195a(11) =-235a(12) =415a(13) =-345a(14) =105a(15) =-199a(16) =619a(17) =-105a(18) =6225a(19) =-6505a(20) =20005a(21) =-17625a(22) =6825a(23) =-9373a(24) =15673a(25) =-12075a(26) =43575a(27) =-46865a(28) =21665a(29) =-20895