# A144392 (b-file synthesized from sequence entry)
0 0
1 5
2 -7
3 27
4 -84
5 240
6 -630
7 1554
8 -3702
9 8694
10 -20310
11 47190
12 -108684
13 247572
14 -557928
15 1246320
16 -2765760
17 6106944
18 -13427424
19 29404704
20 -64138560
21 139366080
22 -301749888
23 651236352
24 -1401444864
25 3007987200
26 -6440578560
27 13759041024