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A077831 as a simple table

na(n)
01
13
211
341
4151
5557
62055
77581
827967
9103173
10380615
111404125
125179951
1319109333
1470496151
15260067021
16959412031
173539362437
1813057045415
1948168685181
20177698871247
21655548074933
222418379337655
238921631905325
2432912750541151
25121418274109413

[1,3,11,41,151,557,2055,7581,27967,103173,380615,
 1404125,5179951,19109333,70496151,260067021,
 959412031,3539362437,13057045415,48168685181,
 177698871247,655548074933,2418379337655,
 8921631905325,32912750541151,121418274109413]