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A243112 as a simple table

na(n)
00
12
24
38
412
520
624
740
848
956
1088
11104
12112
13176
14208
15224
16240
17368
18432
19464
20480
21736
22864
23928
24960
25992
261504
271760
281888
291952
301984
313008
323520
333776
343904
353968
364032
376080
387104
397616
407872
418000
428064
4312160
4414208
4515232
4615744
4716000
4816128

[0,2,4,8,12,20,24,40,48,56,88,104,112,176,208,224,
 240,368,432,464,480,736,864,928,960,992,1504,1760,
 1888,1952,1984,3008,3520,3776,3904,3968,4032,6080,
 7104,7616,7872,8000,8064,12160,14208,15232,15744,
 16000,16128]