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A301772 as a simple table

na(n)
00
12
20
32
48
52
624
716
848
992
10100
11310
12344
13808
141344
152102
164480
176462
1813092
1921662
2037488
2169904
22113652
23212844
24359856
25636402
261134068
271937072
283493120
296012746
3010639264
3118706394
3232550976
3357727738
34100407848
35177116816
36310493720
37543717148

[0,2,0,2,8,2,24,16,48,92,100,310,344,808,1344,
 2102,4480,6462,13092,21662,37488,69904,113652,
 212844,359856,636402,1134068,1937072,3493120,
 6012746,10639264,18706394,32550976,57727738,
 100407848,177116816,310493720,543717148]