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A274873 as a simple table

na(n)
91
104
1170
12280
132919
1411676
1594944
16379776
172669361
1810677444
1968321994
20273287976
211640345707
226561382828
2337643205652
24150572822608
25836008721925
263344034887700
2718122573826942
2872490295307768
29385781480224959
301543125920899836
318099850233307144

[1,4,70,280,2919,11676,94944,379776,2669361,
 10677444,68321994,273287976,1640345707,6561382828,
 37643205652,150572822608,836008721925,
 3344034887700,18122573826942,72490295307768,
 385781480224959,1543125920899836,8099850233307144]