# A101163 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 5 4 10 5 24 6 64 7 182 8 542 9 1685 10 5473 11 18594 12 66063 13 245078 14 947057 15 3802469 16 15826392 17 68158314 18 303273906 19 1392503108 20 6590530876 21 32117814629 22 160998508095 23 829301391150 24 4385370872477 25 23786062734932 26 132224164567459