A030463 Previous palindromic prime concatenated with this palindromic prime is prime.

3, 32323, 33533, 37573, 38083, 79397, 1123211, 1126211, 1163611, 1180811, 1268621, 1276721, 1317131, 1338331, 1447441, 1550551, 1565651, 1609061, 1764671, 1829281, 1895981, 3236323, 3563653, 3627263, 7065607, 7087807

Offset

0,1

Links

Table of n, a(n) for n=0..25.

Mathematica

palQ[n_]:=Module[{idn=IntegerDigits[n]}, idn==Reverse[idn]]; Transpose[ Select[ Partition[Select[Prime[Range[500000]], palQ], 2, 1], PrimeQ[ FromDigits[ Flatten[IntegerDigits/@#]]]&]][[2]] (* Harvey P. Dale, Dec 25 2012 *)

Crossrefs

Sequence in context: A003839 A297023 A175875 * A086509 A068161 A116313

Adjacent sequences: A030460 A030461 A030462 * A030464 A030465 A030466

Keyword

nonn,base

Author

Patrick De Geest

Status

approved