# A049866 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 4 4 8 5 14 6 27 7 50 8 94 9 175 10 327 11 610 12 1139 13 2126 14 3969 15 7409 16 13831 17 25819 18 48198 19 89974 20 167960 21 313541 22 585306 23 1092626 24 2039671 25 3807577 26 7107834 27 13268623 28 24769340 29 46238423 30 86316057 31 161131397 32 300793711