# A024952 (b-file synthesized from sequence entry) 1 1 2 1 3 6 4 11 5 16 6 46 7 106 8 216 9 501 10 1111 11 3026 12 6941 13 16106 14 39571 15 102291 16 249886 17 593231 18 1466876 19 3784726 20 9385226 21 22941751 22 57430001 23 148203456 24 372194386 25 925716416 26 2325988621 27 6058260656 28 15328018016 29 38481839451 30 97762429061 31 254498207801