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A260664 as a simple table

na(n)
01
10
26
318
490
5192
6864
71710
85970
913110
1036810
1175984
12210546
13410130
141003908
152045808
164616730
178950176
1819746720
1937297710
2078247344
21147410640
22294299424
23543058032
241067679540
251925323308
263653769792
276555529158
2812129597486
2921348640230

[1,0,6,18,90,192,864,1710,5970,13110,36810,75984,
 210546,410130,1003908,2045808,4616730,8950176,
 19746720,37297710,78247344,147410640,294299424,
 543058032,1067679540,1925323308,3653769792,
 6555529158,12129597486,21348640230]