# A077447 (b-file synthesized from sequence entry) 1 4 2 8 3 16 4 44 5 92 6 256 7 536 8 1492 9 3124 10 8696 11 18208 12 50684 13 106124 14 295408 15 618536 16 1721764 17 3605092 18 10035176 19 21012016 20 58489292 21 122467004 22 340900576 23 713790008 24 1986914164 25 4160273044 26 11580584408 27 24247848256 28 67496592284