# A049933 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 4 5 8 6 19 7 35 8 70 9 140 10 349 11 663 12 1310 13 2609 14 5214 15 10425 16 20850 17 41700 18 104249 19 198073 20 390935 21 779265 22 1557231 23 3113815 24 6227316 25 12454423 26 24908776 27 49817517 28 99635018 29 199270025 30 398540046 31 797080089 32 1594160178 33 3188320356 34 7970800889 35 15144521689