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A180268 Numbers n, not divisible by 3, 5, 7 or 11, such that A000203(n)-n-1 and 2*n+1-A000203(n) are prime numbers. 0
4, 988, 1612, 3172, 5332, 7852, 11908, 18748, 19276, 21268, 21508, 25156, 32188, 35932, 41116, 41452, 43108, 50236, 54436, 55876, 57412, 62452, 65836, 71248, 72748, 74572, 85828, 88996, 96772, 97708, 99292, 103948, 104956, 105772, 110812, 116356, 116428 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..37.

CROSSREFS

Cf. A157449, A175727 and A179945.

Sequence in context: A188978 A202684 A006030 * A087365 A024059 A069920

Adjacent sequences:  A180265 A180266 A180267 * A180269 A180270 A180271

KEYWORD

nonn,less

AUTHOR

Alexey Galkin (fetch91(AT)gmail.com), Aug 23 2010

EXTENSIONS

Divisibility requirement added to definition to match the sequence; 4 and terms beyond 7852 added - R. J. Mathar, Aug 25 2010

STATUS

approved

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Last modified November 19 10:44 EST 2017. Contains 294936 sequences.