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A347481 as a simple table

na(n)
14
210
325
454
5104
6205
7410
8814
91609
103190
116340
1212609
1325094
1449990
1599665
16198814
17396784
18792205
191582210
203160854
216315929
2212622510
2325229900
2450435329
25100831054
26201598030
27403092385
28806017014
291611762584
303223085965
316445461290
3212889772734

[4,10,25,54,104,205,410,814,1609,3190,6340,12609,
 25094,49990,99665,198814,396784,792205,1582210,
 3160854,6315929,12622510,25229900,50435329,
 100831054,201598030,403092385,806017014,
 1611762584,3223085965,6445461290,12889772734]