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A267228 as a simple table

na(n)
15
225
3110
4470
51980
68274
734396
8142474
9588596
102426738
119989292
1241065818
13168636772
14691859842
152836150748
1611617837802
1747559474708
18194575978386
19795613053964
203251559375226
2113282278193604
2254232112235170

[5,25,110,470,1980,8274,34396,142474,588596,
 2426738,9989292,41065818,168636772,691859842,
 2836150748,11617837802,47559474708,194575978386,
 795613053964,3251559375226,13282278193604,
 54232112235170]