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A101995 4n-1 such that 4n-1, 8n-1, 16n-1, 32n-1 and 64n-1 are primes. 5
179, 53639, 63419, 126839, 127139, 254279, 296099, 340919, 607319, 810539, 1069199, 1122659, 1598699, 1621619, 1820999, 1866239, 1912679, 1920959, 2045339, 2138399, 2157899, 2245319, 2278079, 2357219, 2667779, 2865839 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

EXAMPLE

4*45-1=179, 8*45-1=359, 16*45-1=719, 32*45-1=1439 and 64*45-1=2879 are primes, so the first entry is 179.

CROSSREFS

Cf. A002515, A101794. Cf. A101994, A101996, A101997, A101998, A101999.

Sequence in context: A168537 A130736 A200955 * A293141 A036203 A053325

Adjacent sequences:  A101992 A101993 A101994 * A101996 A101997 A101998

KEYWORD

easy,nonn

AUTHOR

Douglas Stones (dssto1(AT)student.monash.edu.au), Dec 23 2004

STATUS

approved

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Last modified October 2 20:53 EDT 2022. Contains 357230 sequences. (Running on oeis4.)