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A051897 Values of n such that 90n+11, 90n+13, 90n+17, 90n+19 are all primes. 0
0, 1, 2, 9, 23, 36, 210, 281, 387, 772, 919, 1087, 1505, 1841, 2165, 2415, 2667, 2751, 2865, 2963, 3067, 3270, 3788, 3936, 4417, 4468, 4475, 4578, 4656, 4676, 4747, 4937, 5028, 5194, 5223, 5300, 5558, 5964, 6260, 6510, 6609, 7023, 7042, 7373, 7385, 7835 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

A. Murthy, Some new Smarandache sequences, functions and partitions, Smarandache Notions Journal Vol. 11 N. 1-2-3 Spring 2000

LINKS

Table of n, a(n) for n=1..46.

PROG

(PARI) is(n) = isprime(90*n+11) && isprime(90*n+13) && isprime(90*n+17) && isprime(90*n+19); \\ Michel Marcus, Sep 28 2013

CROSSREFS

Sequence in context: A032149 A032054 A027702 * A209294 A032636 A101986

Adjacent sequences:  A051894 A051895 A051896 * A051898 A051899 A051900

KEYWORD

easy,nonn

AUTHOR

Felice Russo, Dec 17 1999

STATUS

approved

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Last modified May 27 11:14 EDT 2017. Contains 287204 sequences.