# A149474 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 56
5 217
6 1007
7 4323
8 20408
9 91485
10 440772
11 2039543
12 9903272
13 46648424
14 228365295
15 1090701055
16 5361007008
17 25835934259
18 127498368909
19 618915161987
20 3061302337978
21 14936675176933
22 74044185072569
23 362807052727618
24 1801022351300727
25 8852665926284525
26 44004117721904990
27 216871110702639661