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Search: id:A082518
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| A082518 |
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Palindromic primes whose digital root equals their middle digits. |
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+0
1
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| 919, 929, 18181, 18481, 36263, 36563, 72227, 72727, 90709, 1082801, 1085801, 1175711, 1177711, 1178711, 1262621, 1268621, 1444441, 1447441, 1532351, 1535351, 1628261, 1712171, 1714171, 1802081, 1805081, 1895981, 1981891
(list; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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1895981 is in the sequence because digital root rho(1895981)=rho(1+8+9+5+9+8+1)=rho(41)=4+1=5, which is the middle digit of 1895981.
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CROSSREFS
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Cf. A002385.
Adjacent sequences: A082515 A082516 A082517 this_sequence A082519 A082520 A082521
Sequence in context: A074887 A029897 A062335 this_sequence A128375 A068689 A088284
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KEYWORD
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base,nonn
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AUTHOR
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Lekraj Beedassy (blekraj(AT)yahoo.com), Apr 30 2003
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EXTENSIONS
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Corrected by Don Reble (djr(AT)nk.ca) and T. D. Noe (noe(AT)sspectra.com), Nov 15 2006
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