# A119383 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 1
4 11
5 87
6 640
7 4855
8 39909
9 361995
10 3626938
11 39912947
12 478993719
13 6227004807
14 87178258916
15 1307674303055
16 20922789757641
17 355687427834707
18 6402373705204718
19 121645100407784603
20 2432902008174544219