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A149575 as a simple table

na(n)
01
11
25
313
465
5209
61045
73729
818645
970717
10353585
111395805
126979025
1328339645
14141698225
15587614085
162938070425
1712383615985
1861918079925
19264376635889
201321883179445
215704016489345
2228520082446725
23124149831843401
24620749159217005
252722238024497961
2613611190122489805
2760069831193045649

[1,1,5,13,65,209,1045,3729,18645,70717,353585,
 1395805,6979025,28339645,141698225,587614085,
 2938070425,12383615985,61918079925,264376635889,
 1321883179445,5704016489345,28520082446725,
 124149831843401,620749159217005,2722238024497961,
 13611190122489805,60069831193045649]