# A171849 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 1
4 4
5 12
6 36
7 104
8 292
9 810
10 2224
11 6058
12 16408
13 44240
14 118848
15 318339
16 850608
17 2268206
18 6037892
19 16048945
20 42604344
21 112974302
22 299284044
23 792164740
24 2095161996
25 5537651796
26 14627504340
27 38616930931
28 101899265656