# A105277 (b-file synthesized from sequence entry) 0 0 1 1 2 5 3 29 4 203 5 1680 6 16058 7 173865 8 2099957 9 27952999 10 406125305 11 6389713034 12 108157272720 13 1958821525361 14 37779732341077 15 772829270394685 16 16708083353842267 17 380563529091632760 18 9106983116342966818 19 228393730451588322201 20 5989333028770423686565