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A216711 as a simple table

na(n)
11
28
312
4-64
5-210
696
71016
8512
9-2043
10-1680
111092
12-768
131382
148128
15-2520
16-4096
1714706
18-16344
19-39940
2013440
2112192
228736
2368712
246144
25-34025
2611056
27-50760
28-65024
29-102570
30-20160
31227552
3232768
3313104
34117648
35-213360
36130752
37160526
38-319520

[1,8,12,-64,-210,96,1016,512,-2043,-1680,1092,
 -768,1382,8128,-2520,-4096,14706,-16344,-39940,
 13440,12192,8736,68712,6144,-34025,11056,-50760,
 -65024,-102570,-20160,227552,32768,13104,117648,
 -213360,130752,160526,-319520]