# A101652 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 18 4 54 5 108 6 216 7 648 8 1944 9 3888 10 7776 11 23328 12 46656 13 139968 14 419904 15 839808 16 2519424 17 5038848 18 10077696 19 30233088 20 60466176 21 181398528 22 544195584 23 1088391168 24 2176782336 25 6530347008 26 19591041024 27 39182082048 28 117546246144