# A339150 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 6 5 12 6 26 7 62 8 148 9 396 10 1044 11 3024 12 8784 13 26928 14 85824 15 274320 16 954720 17 3149280 18 11910240 19 40253760 20 164643840 21 567181440 22 2497703040 23 8736698880 24 41250263040 25 146090649600 26 736680268800 27 2635858713600 28 14145091430400 29 51047113420800 30 290574650419200