# A324586 (b-file synthesized from sequence entry) 1 2 2 5 3 12 4 28 5 64 6 147 7 338 8 776 9 1783 10 4096 11 9410 12 21619 13 49667 14 114105 15 262144 16 602249 17 1383604 18 3178688 19 7302707 20 16777216 21 38543921 22 88550677 23 203436034 24 467373275 25 1073741824 26 2466810934 27 5667243324 28 13019906166 29 29911889591 30 68719476736 31 157875899766