# A149983 (b-file synthesized from sequence entry)
0 1
1 2
2 5
3 17
4 55
5 200
6 737
7 2782
8 10881
9 42496
10 171031
11 688475
12 2817527
13 11609784
14 48126841
15 201562885
16 845539099
17 3580412372
18 15187225367
19 64821446779
20 277615705565
21 1192720740882
22 5147664505465
23 22251795763422
24 96607920494837
25 420046638765438
26 1832258309887397
27 8008819832696925