# A133532 (b-file synthesized from sequence entry)
1 3400
2 20175
3 180983
4 549151
5 1952201
6 4267249
7 10332299
8 29423591
9 55576643
10 118484257
11 213829309
12 332208601
13 492209651
14 794548943
15 1362464799
16 1977716093
17 2909645707
18 3998950759
19 5227426051
20 6954357343
21 9089168635