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A136005 Numbers of the form 2^p - 1, where p is a prime number that is not the sum, minus 1, of a Pythagorean triple. 10
3, 7, 31, 127, 8191, 131071, 524287, 2147483647, 137438953471, 2199023255551, 8796093022207, 9007199254740991, 2305843009213693951, 147573952589676412927, 9444732965739290427391 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
See A136003 for the values of p.
LINKS
FORMULA
a(n) = 2^A136003(n) - 1.
EXAMPLE
a(3)=31 because A136003(3)=5 and 2^5=32 and 32-1=31.
CROSSREFS
Sequence in context: A093535 A081093 A057612 * A336720 A183077 A088552
KEYWORD
nonn
AUTHOR
Omar E. Pol, Dec 17 2007
STATUS
approved

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)