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A230746 Carmichael numbers of the form (30*k + 1)*(120*k + 1)*(150*k + 1), where 30*k + 1, 120*k + 1 and 150*k + 1 are all primes. 1
68154001, 3713287801, 63593140801, 122666876401, 193403531401, 227959335001, 246682590001, 910355497801, 4790779641001, 5367929037001, 6486222838801, 24572944746001, 25408177226401, 27134994772801, 55003376283001, 63926508701401, 108117809748001, 112614220996801 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

Eric Weisstein's World of Mathematics, Carmichael Number

Index entries for sequences related to Carmichael numbers

Index entries for sequences related to pseudoprimes

FORMULA

(A007304 INTERSECT A157956) INTERSECT A230722.

PROG

(MAGMA) [n : k in [1..593 by 2] | IsPrime(a) and IsPrime(b) and IsPrime(c) and IsOne(n mod CarmichaelLambda(n)) where n is a*b*c where a is 30*k+1 where b is 120*k+1 where c is 150*k+1]

CROSSREFS

Subsequence of A083739 and of A230722. Cf. A007304, A157956.

Sequence in context: A183707 A256274 A158890 * A084071 A251615 A321706

Adjacent sequences:  A230743 A230744 A230745 * A230747 A230748 A230749

KEYWORD

nonn

AUTHOR

Arkadiusz Wesolowski, Oct 29 2013

STATUS

approved

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Last modified May 21 02:55 EDT 2019. Contains 323434 sequences. (Running on oeis4.)