# A149429 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 13
4 44
5 156
6 560
7 2065
8 7702
9 28898
10 109382
11 415768
12 1589470
13 6102378
14 23500260
15 90781393
16 351496758
17 1364024040
18 5303511032
19 20655297846
20 80569251748
21 314690828550
22 1230632550218
23 4817793313450
24 18879891033224
25 74053400563496
26 290704112428572
27 1142059574537634
28 4489837317690300