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A136455 as a simple table

na(n)
11
20
31
4-1
51
61
7-48
828
925
10-1
11233280
12-91368
13-60993
142305
151
16222953472000
17-65503641600
18-33198846720
19985867696
20446161
21-1
22-69132994560000000000
2316249035196800000000
246593300559405000000
25-157196644177875000
26-59060479175425
27144069601
281

[1,0,1,-1,1,1,-48,28,25,-1,233280,-91368,-60993,
 2305,1,222953472000,-65503641600,-33198846720,
 985867696,446161,-1,-69132994560000000000,
 16249035196800000000,6593300559405000000,
 -157196644177875000,-59060479175425,144069601,1]