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A246567 as a simple table

na(n)
1-1
21
39
461
5587
67575
7117485
82057365
939314175
10802816213
1117275712297
12387886408443
139020881956707
14216101556811603
155309497149531957
16133334756362738885
173412887111988377575
1888838285028658754625
192347236720247792005665
2062849602943515066525633

[-1,1,9,61,587,7575,117485,2057365,39314175,
 802816213,17275712297,387886408443,9020881956707,
 216101556811603,5309497149531957,
 133334756362738885,3412887111988377575,
 88838285028658754625,2347236720247792005665,
 62849602943515066525633]