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A250605 as a simple table

na(n)
126
264
3140
4290
5586
61172
72336
84654
99278
1018512
1136964
1273850
13147602
14295084
15590024
161179878
172359558
184718888
199437516
2018874738
2137749146
2275497924
23150995440
24301990430
25603980366
261207960192
272415919796
284831838954

[26,64,140,290,586,1172,2336,4654,9278,18512,
 36964,73850,147602,295084,590024,1179878,2359558,
 4718888,9437516,18874738,37749146,75497924,
 150995440,301990430,603980366,1207960192,
 2415919796,4831838954]