# A151052 (b-file synthesized from sequence entry) 0 1 1 3 2 10 3 37 4 144 5 579 6 2388 7 10034 8 42776 9 184515 10 803609 11 3528235 12 15597277 13 69359086 14 310019528 15 1391987818 16 6275072316 17 28389123237 18 128847871383 19 586488987180 20 2676603498328 21 12244738097206 22 56139530483881 23 257908182355785 24 1187054906742932 25 5473003937362030 26 25274142877986714