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 A167741 Primes that become squares when prefixed with an 8. 8
 41, 281, 5849, 8209, 11801, 29921, 33569, 51929, 70489, 77969, 128201, 139609, 196769, 219689, 346321, 415801, 450649, 532241, 543929, 602489, 625969, 684809, 743849, 755681, 767521, 922169, 934121, 946081, 958049 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of primes of A273363. - Michel Marcus, Jun 24 2016 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..131 MATHEMATICA Select[Prime[Range[10000]], IntegerQ[Sqrt[FromDigits[Join[{8}, IntegerDigits[#]]]]]&] (* G. C. Greubel, Jun 23 2016 *) Select[Prime[Range[80000]], IntegerQ[Sqrt[8*10^IntegerLength[#]+#]]&] (* Harvey P. Dale, Jan 29 2023 *) CROSSREFS Cf. A167734, A167735, A167736, A167737, A167738, A167739, A167740. Cf. A273363. Sequence in context: A142768 A140013 A342299 * A074281 A090833 A201043 Adjacent sequences: A167738 A167739 A167740 * A167742 A167743 A167744 KEYWORD base,nonn AUTHOR Claudio Meller, Nov 10 2009 EXTENSIONS Definition corrected and sequence extended by Michel Marcus, Aug 05 2013 STATUS approved

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Last modified May 29 11:52 EDT 2024. Contains 372940 sequences. (Running on oeis4.)