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A305003 as a simple table

na(n)
01
12
24
38
414
526
648
788
8146
9236
10394
11674
121060
131640
142536
154086
166470
1710292
1816374
1925720
2039332
2160154
2292486
23144218
24217772
25327898
26494384
27745096
281089186
291587432
302338018
313460572
324977860
337197148
3410395464
3514991916
3620924630
3728852352

[1,2,4,8,14,26,48,88,146,236,394,674,1060,1640,
 2536,4086,6470,10292,16374,25720,39332,60154,
 92486,144218,217772,327898,494384,745096,1089186,
 1587432,2338018,3460572,4977860,7197148,10395464,
 14991916,20924630,28852352]