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A260916 as a simple table

na(n)
01
12
24
310
422
548
6104
7220
8460
9954
101956
113976
128026
1316084
1432032
1563440
16124974
17245008
18478204
19929452
201799508
213471396
226673724
2312788976
2424433528
2546546738
2688432264
27167575474
28316768948
29597389576
301124092476
312110661644
323955006820
337396477224

[1,2,4,10,22,48,104,220,460,954,1956,3976,8026,
 16084,32032,63440,124974,245008,478204,929452,
 1799508,3471396,6673724,12788976,24433528,
 46546738,88432264,167575474,316768948,597389576,
 1124092476,2110661644,3955006820,7396477224]