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A276265 as a simple table

na(n)
01
18
242
3204
4972
54608
621816
7103248
8488592
92312064
1010940832
1151772608
12244990656
131159308288
145485905792
1525959585024
16122842075392
17581294942208
182750717200896
1913016533552128
2061594898107392
21291470187331584
221379251735345152
236526689288081408
2430884625316417536

[1,8,42,204,972,4608,21816,103248,488592,2312064,
 10940832,51772608,244990656,1159308288,5485905792,
 25959585024,122842075392,581294942208,
 2750717200896,13016533552128,61594898107392,
 291470187331584,1379251735345152,6526689288081408,
 30884625316417536]