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A158661 as a simple table

na(n)
04
14
26
324
460
5144
6360
7852
81968
94488
1010068
1122272
1248780
13105948
14228588
15490404
161046976
172225964
184715400
199956976
2020965212
2144031360
2292262348
23192920784
24402629256
25838827576
261744784388
273623814864
287516104564

[4,4,6,24,60,144,360,852,1968,4488,10068,22272,
 48780,105948,228588,490404,1046976,2225964,
 4715400,9956976,20965212,44031360,92262348,
 192920784,402629256,838827576,1744784388,
 3623814864,7516104564]