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A027973 as a simple table

na(n)
01
14
29
321
446
599
6209
7436
8901
91849
103774
117671
1215541
1331404
1463329
15127501
16256366
17514939
181033449
192072676
204154701
218324529
2216673534
2333386671
2466837421
25133778524
26267724809
27535721061
281071881326
292144473299
304290096449
318582053396
3217167117141

[1,4,9,21,46,99,209,436,901,1849,3774,7671,15541,
 31404,63329,127501,256366,514939,1033449,2072676,
 4154701,8324529,16673534,33386671,66837421,
 133778524,267724809,535721061,1071881326,
 2144473299,4290096449,8582053396,17167117141]