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A086837 Brilliant Sarrus numbers. 1
341, 1387, 2047, 2701, 31621, 42799, 49141, 49981, 60701, 83333, 88357, 90751, 104653, 129889, 130561, 150851, 162193, 164737, 219781, 226801, 241001, 249841, 282133, 1194649, 1678541, 2035153, 2134277, 2163001, 2284453, 2304167, 2491637 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

REFERENCES

J. Earls, Mathematical Bliss, Pleroma Publications, 2009, page 10. [From Jason Earls, Nov 21 2009]

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

EXAMPLE

2701 is a term because 2^2700 == 1 (mod 2701) and 2701 = 37*73.

MATHEMATICA

brilQ[n_] := Block[{fi = FactorInteger@n}, Plus @@ Last /@ fi == 2 && Floor[ Log[10, fi[[1, 1]]]] == Floor[Log[10, fi[[-1, 1]]]]]; Select[Range[10^5], PowerMod[2, # - 1, #] == 1 && brilQ[#] &] (* Amiram Eldar, Jun 28 2019 after Robert G. Wilson v at A078972 *)

CROSSREFS

Intersection of A001567 and A078972.

Cf. A084653.

Sequence in context: A276733 A050217 A214305 * A020230 A087716 A084653

Adjacent sequences:  A086834 A086835 A086836 * A086838 A086839 A086840

KEYWORD

base,nonn

AUTHOR

Jason Earls, Aug 08 2003

EXTENSIONS

More terms from Jack Brennen, Dec 21 2004

STATUS

approved

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Last modified August 6 16:03 EDT 2020. Contains 336255 sequences. (Running on oeis4.)