The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A090098 Bases such that the smallest prime-power-pseudoprime is belonging to equals 25. 3
 7, 18, 24, 32, 43, 51, 68, 74, 76, 99, 124, 126, 132, 151, 168, 174, 176, 182, 207, 218, 232, 243, 268, 274, 276, 282, 299, 318, 324, 326, 351, 374, 376, 382, 399, 407, 418, 426, 432, 443, 468, 474, 482, 499, 507, 518, 524, 526, 543, 551, 574, 576, 582, 599, 607 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Values of x such that A090096(x) = 25. LINKS Amiram Eldar, Table of n, a(n) for n = 1..10000 MATHEMATICA pspQ[n_, b_] := CompositeQ[n] &&  PowerMod[b, n - 1, n ] == 1 ; aQ[n_]:=pspQ[25, n] && AllTrue[{4, 8, 9, 16}, !pspQ[#, n] &]; Select[Range[1000], aQ] (* Amiram Eldar, Sep 09 2019 *) CROSSREFS Cf. A007535, A090086, A090096, A090097. Sequence in context: A070609 A007236 A056021 * A101865 A138391 A242293 Adjacent sequences:  A090095 A090096 A090097 * A090099 A090100 A090101 KEYWORD nonn AUTHOR Labos Elemer, Dec 01 2003 EXTENSIONS More terms from Amiram Eldar, Sep 09 2019 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified May 17 20:44 EDT 2021. Contains 343990 sequences. (Running on oeis4.)