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A334705 as a simple table

na(n)
10
20
34
40
518
676
70
848
9200
10516
110
12100
13412
141056
152148
160
17180
18738
191884
203820
216768
220
23294
241200
253052
266176
2710922
2817600
290
30448
311824
324628
339352
3416516
3526588
3640120
370
38648
392632
406668
4113456
4223740
4338192
4457588
4582608
460
47900
483650
499232
5018612
5132812
5252758
5379508
54114000
55157252

[0,0,4,0,18,76,0,48,200,516,0,100,412,1056,2148,0,
 180,738,1884,3820,6768,0,294,1200,3052,6176,10922,
 17600,0,448,1824,4628,9352,16516,26588,40120,0,
 648,2632,6668,13456,23740,38192,57588,82608,0,900,
 3650,9232,18612,32812,52758,79508,114000,157252]