# A307522 (b-file synthesized from sequence entry) 0 1 1 -2 2 2 3 -2 4 4 5 -10 6 22 7 -42 8 72 9 -116 10 188 11 -332 12 662 13 -1432 14 3148 15 -6736 16 13784 17 -26894 18 50254 19 -90782 20 160856 21 -285230 22 518170 23 -983710 24 1964800 25 -4090002 26 8705322 27 -18582722 28 39219572 29 -81148034 30 163946630 31 -323136562 32 622125982 33 -1173528562 34 2179230066