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A255512 Numbers n such that 60*n+41, 90*n+61 and 150*n+101 are all prime. 2
0, 1, 4, 7, 21, 24, 31, 43, 46, 70, 99, 108, 109, 112, 154, 158, 176, 213, 218, 234, 238, 267, 273, 311, 319, 337, 381, 515, 518, 519, 528, 540, 658, 680, 689, 704, 736, 739, 752, 781, 837, 889, 1012, 1071, 1165, 1170, 1180, 1197, 1233, 1331, 1344, 1373, 1379 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..53.

Umberto Cerruti, Pseudoprimi di Fermat e numeri di Carmichael (in Italian), p. 10.

MATHEMATICA

Select[Range[0, 1400], PrimeQ[60 # + 41] && PrimeQ[90 # + 61] && PrimeQ[150 # + 101] &]

PROG

(MAGMA) [n: n in [0..2000]| IsPrime(60*n+41) and IsPrime(90*n+61) and IsPrime(150*n+101)];

CROSSREFS

Cf. A202113.

Cf. A255441: Carmichael numbers of the form (60k+41)(90k+61)(150k+101).

Sequence in context: A111955 A244791 A220004 * A039959 A320663 A186335

Adjacent sequences:  A255509 A255510 A255511 * A255513 A255514 A255515

KEYWORD

nonn

AUTHOR

Vincenzo Librandi, Feb 24 2015

STATUS

approved

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Last modified July 28 11:09 EDT 2021. Contains 346326 sequences. (Running on oeis4.)