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A170813 as a simple table

na(n)
11
22
34
412
540
6116
7200
8444
9760
102160
114368
127852
1312828
1417252
1519612
1621104
1719760
1820392
1920128
2020636
2122408
2223988

[1,2,4,12,40,116,200,444,760,2160,4368,7852,12828,
 17252,19612,21104,19760,20392,20128,20636,22408,
 23988]