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A297689 as a simple table

na(n)
15
226
395
4415
51801
67526
732173
8137242
9583129
102484786
1110583683
1245062520
13191933126
14817441956
153481360348
1614827246426
1763149259874
18268952155501
191145471423600
204878575547192
2120777907778014
2288493407078762

[5,26,95,415,1801,7526,32173,137242,583129,
 2484786,10583683,45062520,191933126,817441956,
 3481360348,14827246426,63149259874,268952155501,
 1145471423600,4878575547192,20777907778014,
 88493407078762]