# A328431 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 15 5 53 6 214 7 960 8 4701 9 24873 10 141147 11 853641 12 5472642 13 37024569 14 263342224 15 1962835806 16 15288074104 17 124120865849 18 1048092680689 19 9186689045482 20 83435365244510 21 783923558286071 22 7608398620990535 23 76177574145052258 24 785853360840424425