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A121801 as a simple table

na(n)
10
26
310
432
578
6210
7544
81430
93738
109792
1125630
1267106
13175680
14459942
151204138
163152480
178253294
1821607410
1956568928
20148099382
21387729210
221015088256
232657535550
246957518402
2518215019648
2647687540550
27124847601994

[0,6,10,32,78,210,544,1430,3738,9792,25630,67106,
 175680,459942,1204138,3152480,8253294,21607410,
 56568928,148099382,387729210,1015088256,
 2657535550,6957518402,18215019648,47687540550,
 124847601994]