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A074460 Primes which are sandwiched between two numbers having the same unordered canonical form. 2
19, 307, 349, 491, 739, 919, 1013, 1061, 1277, 1667, 1747, 2357, 2683, 3259, 3581, 3797, 3943, 4013, 4597, 4877, 4987, 5051, 5741, 6067, 7757, 9349, 9413, 9739, 9851, 9923, 9949, 10133, 10243, 10949, 11093, 11149, 12619, 12941, 12979, 13879, 14051 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..41.

MATHEMATICA

f[n_] := Flatten[Table[{ # [[2]]}] & /@ FactorInteger[n]]; Prime[ Select[ Range[1700], Sort[ f[ Prime[ # ] - 1]] == Sort[ f[ Prime[ # ] + 1]] & ]]

CROSSREFS

Cf. A074497, A074498, A061715.

Sequence in context: A152591 A051562 A324359 * A267010 A182460 A032631

Adjacent sequences:  A074457 A074458 A074459 * A074461 A074462 A074463

KEYWORD

easy,nonn

AUTHOR

Robert G. Wilson v, Aug 22 2002

STATUS

approved

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Last modified November 20 20:56 EST 2019. Contains 329347 sequences. (Running on oeis4.)