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A082440
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Palindromic primes with middle digit 4.
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0
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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; internal format)
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OFFSET
| 1,1
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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
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CROSSREFS
| Cf. A002385.
Sequence in context: A067779 A202377 A185768 * A083975 A157655 A115753
Adjacent sequences: A082437 A082438 A082439 * A082441 A082442 A082443
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KEYWORD
| nonn,base
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AUTHOR
| Lekraj Beedassy (blekraj(AT)yahoo.com), Apr 25 2003
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EXTENSIONS
| Added a(9) by Vincenzo Librandi, Apr 12 2011
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