# A034719 (b-file synthesized from sequence entry) 1 9 2 54 3 162 4 567 5 1458 6 4860 7 13122 8 40824 9 118827 10 358668 11 1062882 12 3206142 13 9565938 14 28737180 15 86106564 16 258404985 17 774840978 18 2324916594 19 6973568802 20 20921808654 21 62762237316 22 188289546300 23 564859072962 24 1694587257216