A043292 Numbers that divide 10^k + 1 for some k.

1, 2, 7, 11, 13, 17, 19, 23, 29, 47, 49, 59, 61, 73, 77, 89, 91, 97, 101, 103, 109, 113, 121, 127, 131, 133, 137, 139, 143, 149, 157, 161, 167, 169, 179, 181, 193, 197, 209, 211, 223, 229, 233, 241, 247, 251, 253, 257, 263, 269, 281, 289, 293, 299, 313, 329

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

filter:= n -> traperror(NumberTheory:-ModularLog(-1, 10, n)) <> "no solutions exist":
filter(2):= true:
select(filter, [$1..500]); # Robert Israel, Feb 11 2023

Crossrefs

Cf. A014657, A069531.

Odd primes in this sequence are A028416.

Sequence in context: A253898 A173135 A020627 * A207526 A175442 A020597

Adjacent sequences: A043289 A043290 A043291 * A043293 A043294 A043295

Keyword

nonn

Author

Vladeta Jovovic, Apr 04 2002

Status

approved