# A148792 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 25 5 77 6 258 7 859 8 2951 9 10083 10 35463 11 124321 12 440777 13 1564412 14 5613436 15 20126465 16 72600868 17 262274477 18 952091511 19 3458207202 20 12605564464 21 46002034866 22 168328851812 23 616532841066 24 2262999692234 25 8314445493372 26 30601371089696 27 112732187972575 28 415875293473076 29 1535492331618463