# A099529 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 -1 4 2 5 -3 6 5 7 -9 8 16 9 -28 10 49 11 -86 12 151 13 -265 14 465 15 -816 16 1432 17 -2513 18 4410 19 -7739 20 13581 21 -23833 22 41824 23 -73396 24 128801 25 -226030 26 396655 27 -696081 28 1221537 29 -2143648 30 3761840 31 -6601569 32 11584946 33 -20330163 34 35676949 35 -62608681 36 109870576 37 -192809420 38 338356945 39 -593775046 40 1042002567