# A374856 (b-file synthesized from sequence entry) 1 0 2 1 3 6 4 23 5 76 6 231 7 681 8 1968 9 5605 10 15817 11 44324 12 123573 13 343157 14 950000 15 2623530 16 7230746 17 19896140 18 54671729 19 150058028 20 411465352 21 1127315946 22 3086355718 23 8444524052 24 23092305853 25 63117665557 26 172444844373 27 470961842866 28 1285804853026 29 3509404275438 30 9575773901601