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A098102 Numbers of the form 2^(p - 1) - 1) - 1 where p is prime. 1
1, 3, 15, 63, 1023, 4095, 65535, 262143, 4194303, 268435455, 1073741823, 68719476735, 1099511627775, 4398046511103, 70368744177663, 4503599627370495, 288230376151711743, 1152921504606846975 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

EXAMPLE

(2^5 - 1) - (2^(5-1)) = 2^((7-1)-1)-1 = 2^5-1 = 15

MATHEMATICA

Table[2^(Prime[n - 1] - 1) - 1, {n, 2, 20}]

CROSSREFS

Cf. A097743, A000225.

Sequence in context: A083858 A151241 A080948 * A144067 A001447 A106732

Adjacent sequences:  A098099 A098100 A098101 * A098103 A098104 A098105

KEYWORD

nonn

AUTHOR

Parthasarathy Nambi (PachaNambi(AT)yahoo.com), Sep 22 2004

EXTENSIONS

Edited and extended by Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 23 2004

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Last modified February 15 11:25 EST 2012. Contains 205777 sequences.