# A047155 (b-file synthesized from sequence entry)
3 1
4 5
5 19
6 72
7 268
8 1005
9 3799
10 14350
11 54444
12 207135
13 790949
14 3031433
15 11646994
16 44857634
17 173127114
18 669509099
19 2594004566
20 10066946714
21 39126828963
22 152278248462
23 593391659312
24 2314989154878
25 9041050018706