# A184881 (b-file synthesized from sequence entry) 0 1 1 -3 2 2 3 -3 4 6 5 -14 6 36 7 -99 8 286 9 -858 10 2652 11 -8398 12 27132 13 -89148 14 297160 15 -1002915 16 3421710 17 -11785890 18 40940460 19 -143291610 20 504932340 21 -1790214660 22 6382504440 23 -22870640910 24 82334307276 25 -297670187844 26 1080432533656 27 -3935861372604 28 14386251913656