# A025533 (b-file synthesized from sequence entry) 0 1 1 2 2 5 3 8 4 32 5 26 6 151 7 256 8 664 9 584 10 5732 11 5176 12 61364 13 56422 14 52235 15 97280 16 1547600 17 1454480 18 26069800 19 24674528 20 23422624 21 22292792 22 489159668 23 467672704 24 2240027536 25 2149673168 26 6199081352 27 5967877576 28 166847658052 29 161060147786 30 4825521853483