# A368773 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 7
4 21
5 53
6 159
7 419
8 1257
9 3401
10 10203
11 28095
12 84285
13 235005
14 705015
15 1984155
16 5952465
17 16873745
18 50621235
19 144327287
20 432981861
21 1240296773
22 3720890319
23 10700364691
24 32101094073
25 92619680089
26 277859040267
27 803956981807
28 2411870945421
29 6995553520653
30 20986660561959
31 61001041404555