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A149657 as a simple table

na(n)
01
11
25
317
459
5239
6977
73915
816303
969667
10296063
111267901
125522509
1324150555
14105718063
15466486197
162071291345
179210313171
1841084031479
19184159624765
20827654854537
213725656776357
2216820145214269
2376148179555723
24345270955147199
251568181772886751
267138177586911855
2732546518933448565

[1,1,5,17,59,239,977,3915,16303,69667,296063,
 1267901,5522509,24150555,105718063,466486197,
 2071291345,9210313171,41084031479,184159624765,
 827654854537,3725656776357,16820145214269,
 76148179555723,345270955147199,1568181772886751,
 7138177586911855,32546518933448565]