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A303829 as a simple table

na(n)
10
22
36
428
5148
61144
713128
8250240
98295664
10494367376
1153628829952
1210655018252544
133893626388008448
142627758027841688960
153289042848785452985600
167666804477507744021487616
1733416397343695235205887366144
18273365202164844511328577434284160

[0,2,6,28,148,1144,13128,250240,8295664,494367376,
 53628829952,10655018252544,3893626388008448,
 2627758027841688960,3289042848785452985600,
 7666804477507744021487616,
 33416397343695235205887366144,
 273365202164844511328577434284160]