login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A178705 Numbers q that are strong pseudoprimes to some base a, 2<=a<=q-2, such that a^d == 1 mod q 0
49, 121, 133, 169, 217, 301, 325, 361, 385, 469, 481, 529, 553, 561, 589, 637, 645, 721, 781, 793, 805, 817, 841, 861, 889, 925, 961, 973, 1001, 1045, 1057, 1065, 1105, 1141, 1221, 1225, 1261, 1273, 1281, 1309, 1333, 1369, 1393, 1417, 1441, 1477, 1501 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..47.

FORMULA

a^d == 1 mod q

EXAMPLE

18^3 == 1 mod 49

CROSSREFS

Sequence in context: A044617 A216169 A090095 * A163245 A084733 A227863

Adjacent sequences:  A178702 A178703 A178704 * A178706 A178707 A178708

KEYWORD

nonn

AUTHOR

Karsten Meyer, Dec 26 2010

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 24 21:22 EDT 2017. Contains 287008 sequences.