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A245363 Numbers n for which A242719(n) = prime(n)*(prime(n)+6) + 1. 4
19, 37, 49, 69, 73, 102, 165, 236, 253, 365, 465, 542, 595, 694, 713, 723, 762, 920, 962, 979, 1119, 1162, 1259, 1334, 1387, 1441, 1706, 1797, 1843, 1906 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

These are such numbers n for which prime(n), prime(n)+6, prime(n)*(prime(n)+6)-2 are primes, but prime(n) is not in A062326; besides, if prime(n) is in A001359, then also prime(n+1) is not in A062326.

Prime(n)*(prime(n)+6) + 1 is the third minimal possible value of A242719(n) after prime(n)^2 + 1 and (prime(n)+2)^2 + 1 (cf. A247011 and comment there).

LINKS

Table of n, a(n) for n=1..30.

FORMULA

prime(n) == 7 (mod 10), A242719(n) == 92 (mod 100).

CROSSREFS

Cf. A242719, A246748, A247011.

Sequence in context: A217045 A139313 A272205 * A109639 A225863 A161705

Adjacent sequences:  A245360 A245361 A245362 * A245364 A245365 A245366

KEYWORD

nonn

AUTHOR

Vladimir Shevelev, Sep 09 2014

EXTENSIONS

More terms from Peter J. C. Moses, Sep 09 2014

STATUS

approved

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Last modified March 21 01:18 EDT 2019. Contains 321356 sequences. (Running on oeis4.)