# A034295 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 7 5 11 6 31 7 57 8 148 9 312 10 754 11 1559 12 3844 13 7893 14 17766 15 37935 16 83667 17 170165 18 369698 19 743543 20 1566258 21 3154006 22 6424822 23 12629174 24 25652807 25 49802454 26 98130924 27 189175310 28 368095797