# A037175 (b-file synthesized from sequence entry)
1 2
2 3
3 15
4 22
5 98
6 460
7 5408
8 21170
9 243568
10 3587402
11 25881424
12 25888784
13 33305870
14 61202192
15 115333190
16 135135182
17 167241932
18 788355824
19 788360176
20 1653570248