A050993 5-Knödel numbers.

25, 65, 85, 145, 165, 185, 205, 265, 305, 365, 445, 485, 505, 545, 565, 685, 745, 785, 825, 865, 905, 965, 985, 1085, 1145, 1165, 1205, 1285, 1345, 1385, 1405, 1465, 1565, 1585, 1685, 1745, 1765, 1865, 1925, 1945, 1985, 2005, 2045, 2105, 2165

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

John H. Castillo and Jhony Fernando Caranguay Mainguez, The set of k-units modulo n, arXiv:1708.06812 [math.NT], 2017.

Eric Weisstein's World of Mathematics, Knödel Numbers

Mathematica

Select[Range[10, 2500, 5], Divisible[# - 5, CarmichaelLambda[#]]&] (* Jean-François Alcover, Mar 01 2018 *)

Crossrefs

Cf. A002997, A050990, A033553, A050992, A208154-A208158.

Sequence in context: A306358 A120961 A285579 * A121387 A039376 A043199

Adjacent sequences: A050990 A050991 A050992 * A050994 A050995 A050996

Keyword

nonn

Author

Eric W. Weisstein

Status

approved