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A247368 as a simple table

na(n)
00
11
21
31
41
52
61
75
89
917
104
1165
12121
13277
14841
152746
16441
1728561
1893025
19312001
20583696
215309441
2214145121
23116815697
24719795241
254487760170
26433763929
27175081030037
281091329140889
296935920173025
3053828252727076
31610296440614897
321223724862004841

[0,1,1,1,1,2,1,5,9,17,4,65,121,277,841,2746,441,
 28561,93025,312001,583696,5309441,14145121,
 116815697,719795241,4487760170,433763929,
 175081030037,1091329140889,6935920173025,
 53828252727076,610296440614897,1223724862004841]