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A029972 Palindromic primes in base 4. 6
2, 3, 5, 17, 29, 59, 257, 373, 409, 461, 509, 787, 839, 887, 907, 991, 4289, 4561, 5189, 5669, 5861, 6133, 6217, 6553, 6761, 7309, 7517, 7789, 7853, 12899, 13171, 13591, 14327, 14347, 14411, 14683, 14747, 14891, 15083, 15227, 15439, 15647 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..42.

P. De Geest, World!Of Palindromic Primes

MATHEMATICA

Do[s = RealDigits[n, 4][[1]]; If[PrimeQ[n], If[FromDigits[s] == FromDigits[Reverse[s]], Print[n]]], {n, 1, 1600}]

CROSSREFS

Sequence in context: A127062 A214735 A216061 * A077498 A118958 A189536

Adjacent sequences:  A029969 A029970 A029971 * A029973 A029974 A029975

KEYWORD

nonn,base

AUTHOR

Patrick De Geest

STATUS

approved

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Last modified December 21 16:33 EST 2014. Contains 252324 sequences.