# A007193 (b-file synthesized from sequence entry)
1 1
2 6
3 45
4 365
5 3101
6 27144
7 242636
8 2202873
9 20241055
10 187766940
11 1755409652
12 16517284570
13 156265005369
14 1485269469971
15 14174126304850
16 135741870538293
17 1303996171096108
18 12561249340326373
19 121298814197201725