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A045752 4n-1 is composite. 0
4, 7, 9, 10, 13, 14, 16, 19, 22, 23, 24, 25, 28, 29, 30, 31, 34, 36, 37, 39, 40, 43, 44, 46, 47, 49, 51, 52, 54, 55, 58, 59, 61, 62, 64, 65, 67, 69, 70, 72, 73, 74, 75, 76, 79, 80, 81, 82, 84, 85, 86, 88, 89, 91, 93, 94, 97, 98, 99, 100 (list; graph; refs; listen; history; internal format)
OFFSET

0,1

EXAMPLE

7 belong to the sequence because 7*4-1=27 is not a prime.

CROSSREFS

Sequence in context: A081828 A175149 A153053 * A010380 A056991 A010389

Adjacent sequences:  A045749 A045750 A045751 * A045753 A045754 A045755

KEYWORD

nonn,easy

AUTHOR

Felice Russo (frusso(AT)micron.com)

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Last modified February 16 01:56 EST 2012. Contains 205860 sequences.