# A090400 (b-file synthesized from sequence entry) 0 1 1 3 2 9 3 24 4 63 5 162 6 414 7 1053 8 2673 9 6777 10 17172 11 43497 12 110160 13 278964 14 706401 15 1788723 16 4529277 17 11468628 18 29039715 19 73531314 20 186188058 21 471445029 22 1193741145 23 3022659261 24 7653642696 25 19379704653 26 49071136176 27 124252480440