A082441 Palindromic primes with middle digit 5.

5, 151, 353, 757, 10501, 15551, 16561, 31513, 33533, 34543, 36563, 37573, 70507, 75557, 97579, 1035301, 1055501, 1065601, 1085801, 1145411, 1175711, 1215121, 1235321, 1245421, 1335331, 1535351, 1565651, 1685861, 1695961, 1755571, 1805081, 1865681, 1895981

Offset

1,1

Links

Table of n, a(n) for n=1..33.

Prog

(Magma) [ p: p in PrimesUpTo(200000000) | IsOdd(d) and D[(d+1) div 2] eq 5 and D eq Reverse(D) where d is #D where D is Intseq(p) ]; // Vincenzo Librandi, Apr 12 2011

Crossrefs

Cf. A002385.

Sequence in context: A094364 A232788 A324097 * A096065 A041431 A107691

Adjacent sequences: A082438 A082439 A082440 * A082442 A082443 A082444

Keyword

nonn,base

Author

Lekraj Beedassy, Apr 25 2003

Extensions

a(3), a(12), a(27), a(29) from Vincenzo Librandi, Apr 12 2011

Status

approved