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A194694 as a simple table

na(n)
00
12
24
38
414
522
630
741
857
970
1080
1192
12112
13134
14160
15184
16220
17241
18251
19263

[0,2,4,8,14,22,30,41,57,70,80,92,112,134,160,184,
 220,241,251,263]