# A036619 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 4 5 9 6 20 7 47 8 112 9 276 10 684 11 1713 12 4295 13 10797 14 27103 15 67985 16 170202 17 425420 18 1061324 19 2643451 20 6573241 21 16321357 22 40469502 23 100219208 24 247888403 25 612467226 26 1511670488 27 3727408256 28 9182341969 29 22600453960 30 55579530018