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 A113601 Intersection of A002144 and A005098. 2
 13, 37, 73, 97, 193, 277, 373, 409, 433, 577, 673, 709, 853, 997, 1033, 1093, 1129, 1297, 1429, 1453, 1549, 1597, 1753, 1777, 2017, 2029, 2293, 2437, 2677, 2713, 2953, 3037, 3049, 3109, 3229, 3457, 3469, 3637, 3769, 3793, 3853, 4057, 4273, 4297, 4729 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Primes p of the form 4m+1 such that q=4p+1 is also prime. Corresponding values of m are: 3,9,18,24,48,69,93,102,108,144,168,177,213,249,258,273,282,324,357,363,387,399,438,444,504,507,573,609,669,678,738,759,762,777,807,864,867,909 - all multiples of 3. And corresponding values of q are: 53,149,293,389,773,1109,1493,1637,1733,2309,2693,2837,3413,3989,4133,4373,4517,5189,5717,5813,6197,6389,7013,7109,8069,8117,9173,9749,10709,10853,11813. LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA Select[Prime[Range[700]], IntegerQ[(#-1)/4]&&PrimeQ[4#+1]&] (* Harvey P. Dale, May 15 2022 *) CROSSREFS Cf. A002144, A005098. Sequence in context: A049742 A347209 A247867 * A158864 A003154 A083577 Adjacent sequences: A113598 A113599 A113600 * A113602 A113603 A113604 KEYWORD nonn AUTHOR Zak Seidov, May 27 2007 STATUS approved

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Last modified May 20 19:00 EDT 2024. Contains 372720 sequences. (Running on oeis4.)