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A077686 2^(n-1) - (prime(n) mod n). 0
1, 1, 2, 5, 15, 31, 61, 125, 251, 503, 1015, 2047, 4094, 8191, 16382, 32763, 65528, 131065, 262134, 524277, 1048566, 2097139, 4194290, 8388591, 16777194, 33554409, 67108842, 134217705, 268435434, 536870889, 1073741821, 2147483645, 4294967291, 8589934589 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Sequence in context: A146117 A191313 A078528 * A034499 A006451 A000962

Adjacent sequences:  A077683 A077684 A077685 * A077687 A077688 A077689

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Feb 12 2003

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Last modified February 14 18:47 EST 2012. Contains 205663 sequences.