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A161842 as a simple table

na(n)
12
24
36
410
512
616
718
822
926
1030
1132
1238
1340
1444
1548
1654
1756
1862
1964
2070
2174
2278
2380
2488
2592
2696
27100
28106
29108
30116
31118
32124
33128
34132
35136
36146
37148
38152
39156
40164
41166
42174
43176
44182
45188
46192
47194
48204
49208
50214
51218
52224
53226
54234
55238
56246

[2,4,6,10,12,16,18,22,26,30,32,38,40,44,48,54,56,
 62,64,70,74,78,80,88,92,96,100,106,108,116,118,
 124,128,132,136,146,148,152,156,164,166,174,176,
 182,188,192,194,204,208,214,218,224,226,234,238,
 246]