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A082440 Palindromic primes with middle digit 4. 0
11411, 12421, 15451, 17471, 18481, 30403, 32423, 77477, 78487, 96469, 1074701, 1114111, 1134311, 1374731, 1444441, 1464641, 1594951, 1654561, 1684861, 1714171, 1734371, 1764671, 1824281, 1884881, 1924291, 1984891, 3064603, 3304033 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..28.

PROG

(MAGMA) [ p: p in PrimesUpTo(200000000) | IsOdd(d) and D[(d+1) div 2] eq 4 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: A268841 A235016 A185768 * A083975 A157655 A262399

Adjacent sequences:  A082437 A082438 A082439 * A082441 A082442 A082443

KEYWORD

nonn,base

AUTHOR

Lekraj Beedassy, Apr 25 2003

EXTENSIONS

a(9) from Vincenzo Librandi, Apr 12 2011

STATUS

approved

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Last modified July 4 16:26 EDT 2022. Contains 355081 sequences. (Running on oeis4.)