# A143363 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 6
5 17
6 43
7 123
8 343
9 1004
10 2938
11 8791
12 26456
13 80597
14 247091
15 763507
16 2372334
17 7413119
18 23271657
19 73376140
20 232238350
21 737638868
22 2350318688
23 7510620143
24 24064672921
25 77294975952
26 248832007318
27 802737926643