# A368933 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 30 4 143 5 729 6 3891 7 21471 8 121505 9 701316 10 4112751 11 24435424 12 146773582 13 889813460 14 5437598036 15 33459382065 16 207138653334 17 1289231982454 18 8062548100445 19 50637167131635 20 319255808742145 21 2019867936975125 22 12819928874057325 23 81603361510347675