# A215037 (b-file synthesized from sequence entry)
0 1
1 4
2 19
3 79
4 339
5 1431
6 6072
7 25707
8 108922
9 461362
10 1954426
11 8278978
12 35070483
13 148560678
14 629313573
15 2665814361
16 11292572005
17 47836100785
18 202636977730
19 858384007525
20 3636173014596
21 15403076054964
22 65248477252164