# A100446 (b-file synthesized from sequence entry) 0 1 1 3 2 6 3 14 4 36 5 108 6 352 7 1182 8 4116 9 14602 10 52488 11 190746 12 699252 13 2581428 14 9587580 15 35792568 16 134219796 17 505294128 18 1908881900 19 7233642930 20 27487816992 21 104715443852 22 399822505524 23 1529755490574 24 5864062367252 25 22517998808028