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A032715 n prefixed by '7' and followed by '3' is a prime. 0
3, 4, 7, 10, 19, 21, 24, 25, 28, 33, 39, 43, 52, 57, 58, 60, 64, 67, 70, 72, 75, 79, 82, 85, 87, 88, 93, 96, 99, 102, 114, 115, 123, 126, 129, 133, 135, 136, 141, 144, 145, 147, 148, 150, 156, 159, 163, 166, 169, 171, 184, 193, 196, 198, 199, 204, 205, 207 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..57.

CROSSREFS

Sequence in context: A280423 A143607 A193826 * A293276 A291609 A291870

Adjacent sequences:  A032712 A032713 A032714 * A032716 A032717 A032718

KEYWORD

nonn,base

AUTHOR

Patrick De Geest, May 15 1998

STATUS

approved

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Last modified May 30 13:58 EDT 2020. Contains 334724 sequences. (Running on oeis4.)