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A066104 as a simple table

na(n)
00
14
22
38
44
512
66
716
88
920
1010
1124
1212
1328
1414
1532
1616
1736
1818
1940
2020
2144
2222
2348
2424
2552
2626
2756
2828
2960
3030
3164
3232
3368
3434
3572
3636
3776
3838
3980
4040
4184
4242
4388
4444
4592
4646
4796
4848
49100
5050
51104
5252
53108
5454
55112
5656
57116
5858
59120
6060
61124
6262
63128
6464
65132
6666
67136

[0,4,2,8,4,12,6,16,8,20,10,24,12,28,14,32,16,36,
 18,40,20,44,22,48,24,52,26,56,28,60,30,64,32,68,
 34,72,36,76,38,80,40,84,42,88,44,92,46,96,48,100,
 50,104,52,108,54,112,56,116,58,120,60,124,62,128,
 64,132,66,136]