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A052994 as a simple table

na(n)
00
12
22
36
412
528
662
7140
8314
9706
101586
113564
128008
1317994
1440432
1590850
16204138
17458694
181030676
192315908
205203798
2111692828
2226273546
2359036122
24132652962
25298068500
26669753840
271504923218
283381531776
297598232930
3017073074418

[0,2,2,6,12,28,62,140,314,706,1586,3564,8008,
 17994,40432,90850,204138,458694,1030676,2315908,
 5203798,11692828,26273546,59036122,132652962,
 298068500,669753840,1504923218,3381531776,
 7598232930,17073074418]