# A173559 (b-file synthesized from sequence entry) 0 1 1 -6 2 -13 3 -27 4 -50 5 -106 6 -208 7 -412 8 -840 9 -1656 10 -3328 11 -6672 12 -13280 13 -26656 14 -53248 15 -106432 16 -213120 17 -425856 18 -851968 19 -1704192 20 -3407360 21 -6816256 22 -13631488 23 -27261952 24 -54528000 25 -109049856 26 -218103808 27 -436211712 28 -872407040 29 -1744838656