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A139800 as a simple table

na(n)
01
10
20
30
42
52
64
78
818
934
1068
11136
12274
13546
141092
152184
164370
178738
1817476
1934952
2069906
21139810
22279620
23559240
241118482
252236962
264473924
278947848
2817895698
2935791394
3071582788
31143165576
32286331154
33572662306
341145324612
352290649224

[1,0,0,0,2,2,4,8,18,34,68,136,274,546,1092,2184,
 4370,8738,17476,34952,69906,139810,279620,559240,
 1118482,2236962,4473924,8947848,17895698,35791394,
 71582788,143165576,286331154,572662306,1145324612,
 2290649224]