# A136593 (b-file synthesized from sequence entry)
3 1
4 6
5 -25
6 -135
7 1834
8 -3668
9 -110692
10 1339020
11 -1181664
12 -164709864
13 2206092096
14 395662176
15 -463716547776
16 7029335571840
17 8900411569920
18 -2265668505227520
19 38689597829053440
20 92447263589921280
21 -17785648201625856000
22 338957966532455424000