# A294820 (b-file synthesized from sequence entry)
0 1
1 1
2 2
3 6
4 21
5 76
6 275
7 989
8 3544
9 12696
10 45578
11 164194
12 593966
13 2158090
14 7875503
15 28862235
16 106203597
17 392291117
18 1454239837
19 5409048372
20 20182045236
21 75522431214
22 283377791271
23 1065990318403
24 4019415215923
25 15188857311110
26 57514327098488
27 218201177979480
28 829305547436095