The OEIS Foundation is grateful to everyone who made a donation during our Annual Appeal. Visit the new and spectacular Pictures from the OEIS page!
0,1
Contains odd numbers from 1 to 999. See patterns in graph.
Zak Seidov, Table of n, a(n) for n = 0..499
n=3: a(3)=589 because 2n+1=7, 7*589 = 4123 = 123 (mod 1000).
n=499: a(499)=877 because 2n+1=999 and 999*877=876123 = 123 (mod 1000).
Sequence in context: A015042 A062233 A123171 * A192231 A077378 A031509
Adjacent sequences: A125094 A125095 A125096 * A125098 A125099 A125100
nonn
Zak Seidov, Nov 20 2006
approved