# A132050 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 5 5 8 6 61 7 136 8 1385 9 3968 10 50521 11 176896 12 2702765 13 260096 14 199360981 15 951878656 16 19391512145 17 104932671488 18 2404879675441 19 14544442556416 20 74074237647505 21 2475749026562048 22 69348874393137901 23 507711943253426176