# A165366 (b-file synthesized from sequence entry) 0 1 1 24 2 552 3 12696 4 292008 5 6716184 6 154472232 7 3552861336 8 81715810728 9 1879463646468 10 43227663862416 11 994236268689840 12 22867434176514576 13 525950985982745136 14 12096872675830065552 15 278228071503310838448