A052148 Integers n < (reversal of n) such that (reversal of n) + 1 is divisible by n-1.

12, 102, 1002, 1079, 10002, 17525, 100002, 1000002, 3124739, 10000002, 100000002, 175247525, 1000000002, 1078012079, 1087921979

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Example

For n = 12, the reversal of n is 21, 12-1 = 11, 21+1 = 22 and 11 divides 22.

Prog

(PARI) isok(n) = {d = digits(n); revn = sum(i = 1, #d, d[i]*10^(i - 1)); (revn > n) && (n!=1) && ((revn + 1) % (n - 1) == 0); } \\ Michel Marcus, Aug 22 2013

Crossrefs

Cf. A004086.

Sequence in context: A356836 A240462 A126533 * A133384 A052067 A307821

Adjacent sequences: A052145 A052146 A052147 * A052149 A052150 A052151

Keyword

nonn,base

Author

Mary L. Sellers (sellersm(AT)cedarville.edu), Jan 22 2000

Extensions

a(8)-a(11) from Naohiro Nomoto, Jun 24 2001

a(12)-a(15) from Sean A. Irvine, Oct 26 2021

Status

approved