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A186104 as a simple table

n a(n)
1 2
2 17
3 107
4 647
5 23327
6 139967
7 30233087
8 6530347007
9 39182082047
10 14215144014964850687
11 240614901699187213221099227578367
12 53193679461858262403856737876228196870083927814929645567

[2,17,107,647,23327,139967,30233087,6530347007,
 39182082047,14215144014964850687,
 240614901699187213221099227578367,
 53193679461858262403856737876228196870083927814929\
 645567]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)