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A032704 n prefixed by '4' and followed by '1' is prime. 0
0, 2, 3, 6, 9, 11, 20, 21, 23, 24, 26, 27, 39, 42, 44, 45, 48, 56, 59, 62, 65, 69, 72, 75, 80, 83, 86, 87, 93, 95, 101, 105, 108, 113, 114, 116, 120, 122, 123, 128, 134, 135, 138, 141, 149, 152, 161, 162, 164, 165, 168, 176, 177, 180, 185, 191, 194, 198, 206 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..58.

CROSSREFS

Sequence in context: A007780 A018537 A018331 * A029805 A082007 A064417

Adjacent sequences:  A032701 A032702 A032703 * A032705 A032706 A032707

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

STATUS

approved

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Last modified September 24 03:26 EDT 2021. Contains 347623 sequences. (Running on oeis4.)