# A148945 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 9 4 29 5 104 6 390 7 1482 8 5872 9 23670 10 96862 11 402409 12 1691824 13 7184785 14 30771333 15 132773241 16 577026236 17 2521811081 18 11077691844 19 48908119250 20 216832245702 21 964920349669 22 4309740197244 23 19311403519650 24 86782764283827 25 391070601747452 26 1766791977497850 27 8000592935633367 28 36308193503404528