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A250606 as a simple table

na(n)
157
2140
3297
4592
51153
62236
74353
88528
916809
1033292
1166169
12131824
13263025
14525308
151049745
162098480
174195801
188390284
1916779081
2033556496
2167111137
22134220220
23268438177
24536873872
251073745033
262147487116
274294971033

[57,140,297,592,1153,2236,4353,8528,16809,33292,
 66169,131824,263025,525308,1049745,2098480,
 4195801,8390284,16779081,33556496,67111137,
 134220220,268438177,536873872,1073745033,
 2147487116,4294971033]