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A330884 as a simple table

na(n)
00
12
26
316
434
580
6164
7368
8754
91640
103312
117064
1214312
1330088
1460612
15126104
16253918
17524104
181053564
192161376
204341072
218863048
2217786736
2336176784
2472556592
25147125256
26294927876
27596566200
281195391736
292413163552
304833869604
319742379496
3219509908190
3339268751168
3478621406744
35158073043176

[0,2,6,16,34,80,164,368,754,1640,3312,7064,14312,
 30088,60612,126104,253918,524104,1053564,2161376,
 4341072,8863048,17786736,36176784,72556592,
 147125256,294927876,596566200,1195391736,
 2413163552,4833869604,9742379496,19509908190,
 39268751168,78621406744,158073043176]