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A117429 as a simple table

n a(n)
0 4
1 4
2 25
3 123
4 626
5 3127
6 15623
7 78123
8 390623
9 1953122
10 9765627
11 48828127
12 244140623
13 1220703121
14 6103515629
15 30517578127
16 152587890617
17 762939453119
18 3814697265623
19 19073486328122
20 95367431640623

[4,4,25,123,626,3127,15623,78123,390623,1953122,
 9765627,48828127,244140623,1220703121,6103515629,
 30517578127,152587890617,762939453119,
 3814697265623,19073486328122,95367431640623]

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Last modified July 15 14:54 EDT 2018. Contains 312638 sequences. (Running on oeis4.)