# A149745 (b-file synthesized from sequence entry)
0 1
1 1
2 5
3 17
4 79
5 321
6 1495
7 6571
8 31009
9 141345
10 674375
11 3141567
12 15106187
13 71367081
14 345115645
15 1646406573
16 7995517313
17 38414709245
18 187167554711
19 904086623973
20 4416440135227
21 21422272614469
22 104868344343987
23 510368704208833
24 2502772503138939
25 12213419014320941
26 59980856399588001
27 293360073380340249