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A279447 as a simple table

na(n)
10
21
314
473
5301
6890
72321
85166
910654
1020055
1135880
1260511
1398419
14153608
15233331
16343820
17496076
18699261
19969234
201318885
211770185
222340646
233059749
243950618
255051786
266393075
278023756
289981531
2912328239
3015110740
3118405415
3222269656
3326796504
3432055353
3538158166

[0,1,14,73,301,890,2321,5166,10654,20055,35880,
 60511,98419,153608,233331,343820,496076,699261,
 969234,1318885,1770185,2340646,3059749,3950618,
 5051786,6393075,8023756,9981531,12328239,15110740,
 18405415,22269656,26796504,32055353,38158166]