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A032731 Numbers n such that n prefixed by '6' and followed by '9' is a prime. 0
1, 5, 19, 22, 26, 29, 32, 35, 37, 38, 44, 46, 52, 56, 59, 61, 65, 67, 68, 70, 71, 77, 82, 86, 89, 94, 95, 109, 112, 116, 133, 137, 140, 146, 151, 155, 160, 172, 181, 187, 190, 194, 197, 203, 209, 211, 212, 218, 221, 229, 245, 253, 254, 263, 265, 281, 286, 292 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..58.

CROSSREFS

Sequence in context: A226658 A212153 A243018 * A275954 A087840 A074229

Adjacent sequences:  A032728 A032729 A032730 * A032732 A032733 A032734

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

STATUS

approved

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Last modified September 20 12:43 EDT 2019. Contains 327238 sequences. (Running on oeis4.)