# A013338 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 0 4 9 5 -20 6 177 7 -1260 8 7105 9 -99144 10 564049 11 -10278840 12 77134761 13 -1412196188 14 15082747617 15 -257693157540 16 3771722331457 17 -62330454304272 18 1150241027577697 19 -19671866661968880 20 420212562193269513