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A276042 as a simple table

na(n)
01
14
216
362
4230
5812
62728
78752
826944
980000
10230144
11644096
121759744
134707328
1412359680
1531920128
1681231872
17204013568
18506331136
191243217920
203022913536
217285243904
2217415274496
2341321234432
2497370767360
25227993976832
26530713673728

[1,4,16,62,230,812,2728,8752,26944,80000,230144,
 644096,1759744,4707328,12359680,31920128,81231872,
 204013568,506331136,1243217920,3022913536,
 7285243904,17415274496,41321234432,97370767360,
 227993976832,530713673728]