200322^m+3^n and 2^n+3^m
- Apr 9, 2009Mark Underwood's most interesting sequence for the OEIS
might be the cases for which his conjecture fails, namely
"Numbers n such that there are no primes of the forms
2^m+3^n or 2^n+3^m for m < n"
This sequence begins with
n = 1679, 1743 ...
but Mark would need two more entries to satisfy Neil Sloane.
PFGW records that there are no more with n < 2500.
Heuristics suggest that more exist, beyond that paltry limit.
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