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A268208 as a simple table

na(n)
01
13
212
352
4236
51108
65340
726276
8131484
9667108
103424108
1117748564
1292776716
13488527284
142588907708
1513797337668
1673901315644
17397609958596
182147904635340
1911645489540468
2063349140877356
21345651184335892
221891209255293852

[1,3,12,52,236,1108,5340,26276,131484,667108,
 3424108,17748564,92776716,488527284,2588907708,
 13797337668,73901315644,397609958596,
 2147904635340,11645489540468,63349140877356,
 345651184335892,1891209255293852]