# A355863 (b-file synthesized from sequence entry) 0 1 1 2 2 2 3 5 4 13 5 34 6 100 7 310 8 973 9 3124 10 10251 11 34086 12 114610 13 389205 14 1332788 15 4596587 16 15952281 17 55667566 18 195209636 19 687535017 20 2431044066 21 8626448629 22 30709429207 23 109645265403 24 392536229012 25 1408793986056 26 5067691347863 27 18268127956618 28 65983199912542