# A074347 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 12 5 13 6 52 7 53 8 131 9 271 10 811 11 1601 12 2711 13 8111 14 13997 15 34589 16 74551 17 147773 18 310567 19 621227 20 1230343 21 2627759 22 4921373 23 10741931 24 24965191 25 45887291 26 111477631 27 183638843 28 394195667 29 788380493 30 1576798931