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A026649 as a simple table

na(n)
01
13
28
336
4114
5558
61856
79384
831942
9164322
10566928
112948184
1210262004
1353761068
14188306112
15991821456
163490234182
1718458523378
1865190481904
19345875613144
201225052975644
216516499594212
2223134851823872
23123325174525104

[1,3,8,36,114,558,1856,9384,31942,164322,566928,
 2948184,10262004,53761068,188306112,991821456,
 3490234182,18458523378,65190481904,345875613144,
 1225052975644,6516499594212,23134851823872,
 123325174525104]