# A335577 (b-file synthesized from sequence entry) 0 1 1 -1 2 -2 3 9 4 32 5 -285 6 -1236 7 18725 8 86176 9 -2087001 10 -9204580 11 351964569 12 1336442304 13 -83422970917 14 -231889447076 15 26389118293005 16 35917342192064 17 -10722110983670193 18 5028963509133756 19 5432569724760331841 20 -14852185163192897120 21 -3352369390318855889661