First differences of A116697.

Terms

a(0) =0a(1) =-3a(2) =4a(3) =-4a(4) =7a(5) =-14a(6) =22a(7) =-33a(8) =54a(9) =-90a(10) =145a(11) =-232a(12) =376a(13) =-611a(14) =988a(15) =-1596a(16) =2583a(17) =-4182a(18) =6766a(19) =-10945a(20) =17710a(21) =-28658a(22) =46369a(23) =-75024a(24) =121392a(25) =-196419a(26) =317812a(27) =-514228a(28) =832039a(29) =-1346270