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A257612 as a simple table

na(n)
01
12
22
34
424
54
68
7184
8184
98
1016
111216
123680
131216
1416
1532
167584
1753824
1853824
197584
2032
2164
2246208
23674752
241507072
25674752
2646208
2764
28128
29278912
307764096
3133244544
3233244544
337764096
34278912
35128
36256
371677312
3884892672
39636233728
401196803584
41636233728
4284892672
431677312
44256

[1,2,2,4,24,4,8,184,184,8,16,1216,3680,1216,16,32,
 7584,53824,53824,7584,32,64,46208,674752,1507072,
 674752,46208,64,128,278912,7764096,33244544,
 33244544,7764096,278912,128,256,1677312,84892672,
 636233728,1196803584,636233728,84892672,1677312,
 256]