A229877 - OEIS

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A229877

Palindromic prime numbers == 1 (mod 9).

181, 757, 919, 12421, 16561, 18181, 19891, 30403, 34543, 35353, 70507, 71317, 77977, 78787, 95959, 96769, 97579, 98389, 1008001, 1065601, 1114111, 1163611, 1196911, 1212121, 1245421, 1253521, 1278721, 1286821, 1327231, 1335331, 1343431, 1409041, 1490941

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Shyam Sunder Gupta, Table of n, a(n) for n = 1..1005

MATHEMATICA

t = {}; Do[z = n*10^(IntegerLength[n] - 1) + FromDigits@Rest@Reverse@IntegerDigits[n]; If[PrimeQ[z] && Mod[z, 9] == 1, AppendTo[t, z]], {n, 1, 99999}]; t

Select[Prime[Range[115000]], PalindromeQ[#]&&Mod[#, 9]==1&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, May 15 2021 *)

CROSSREFS

Cf. A002385, A229875.

Sequence in context: A253821 A154628 A142731 * A067383 A107255 A163442

Adjacent sequences: A229874 A229875 A229876 * A229878 A229879 A229880

KEYWORD

nonn,base,less

AUTHOR

Shyam Sunder Gupta, Oct 02 2013

STATUS

approved