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A303039 as a simple table

na(n)
121
2363
3360
42926
511079
659654
7345668
82060154
913122422
1089037375
11632329265
124677904112
1335799149696
14280072132889
152226022479526
1617895152751103
17144903511517451
181178993189869482
199624601342853800
2078735791021587131

[21,363,360,2926,11079,59654,345668,2060154,
 13122422,89037375,632329265,4677904112,
 35799149696,280072132889,2226022479526,
 17895152751103,144903511517451,1178993189869482,
 9624601342853800,78735791021587131]