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A027972 as a simple table

na(n)
51
64
711
829
976
10199
11518
121324
133278
147784
1517643
1638138
1778753
18155793
19296248
20543333
21964239
221660748
232783499
244550843
257273394
2611385571
2717485634
2826385946
2939175444
3057296576
3182639259
32117654736
33165492559

[1,4,11,29,76,199,518,1324,3278,7784,17643,38138,
 78753,155793,296248,543333,964239,1660748,2783499,
 4550843,7273394,11385571,17485634,26385946,
 39175444,57296576,82639259,117654736,165492559]