# A148440 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 6 4 16 5 45 6 154 7 499 8 1634 9 5888 10 20672 11 73593 12 274009 13 1005519 14 3759072 15 14335509 16 54252692 17 208982781 18 811404178 19 3144286752 20 12352600466 21 48645794723 22 191989283484 23 764771646799 24 3048041384831 25 12199723310941 26 49103289442878 27 197753021277819 28 800089083193025 29 3247148044051183