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A290968 as a simple table

na(n)
01
11
21
3-1
41
51
65
75
89
911
1021
1133
1257
1389
14145
15231
16377
17609
18989
191597
202585
214179
226765
2310945
2417713
2528657
2646369
2775023
28121393
29196417
30317813
31514229
32832041
331346267
342178309
353524577
365702889
379227465
3814930353
3924157815

[1,1,1,-1,1,1,5,5,9,11,21,33,57,89,145,231,377,
 609,989,1597,2585,4179,6765,10945,17713,28657,
 46369,75023,121393,196417,317813,514229,832041,
 1346267,2178309,3524577,5702889,9227465,14930353,
 24157815]