# A304067 (b-file synthesized from sequence entry) 1 0 2 0 3 1 4 3 5 9 6 27 7 79 8 233 9 679 10 1987 11 5784 12 16864 13 49063 14 142821 15 415439 16 1208761 17 3516475 18 10232428 19 29778138 20 86682119 21 252382445 22 735040515 23 2141319946 24 6239913801 25 18188637903 26 53033228465 27 154674931182 28 451247206423