# A164992 (b-file synthesized from sequence entry)
0 1
1 31
2 930
3 27900
4 837000
5 25110000
6 753300000
7 22599000000
8 677969999535
9 20339099972100
10 610172998744965
11 18305189949807900
12 549155698118005500
13 16474670932253220000
14 494240127628988250000
15 14827203818711397000000