# A297179 (b-file synthesized from sequence entry)
6 1
7 28
8 399
9 4179
10 36498
11 282282
12 1999998
13 13258674
14 83417334
15 503090588
16 2929953026
17 16569715890
18 91386952020
19 493234934220
20 2612295374940
21 13607257868820
22 69841333755270
23 353777814426960
24 1770937330172010
25 8770508370593970
26 43015147164809820
27 209104302965011740