login
A160945
Numbers k that are multiples of the reversal of k-1.
0
2, 11, 42, 74, 101, 794, 1001, 7994, 9101, 9321, 10001, 73001, 79994, 100001, 340001, 735222, 799994, 1000001, 3070001, 7999994, 9382712, 9910001, 10000001, 73000001, 79000001, 79999994, 100000001, 361300001, 799999994, 1000000001, 1281010001, 3692210001
OFFSET
1,1
COMMENTS
Several obvious patterns can be discerned. For example, 1 plus 10 to any integer power, and 7 followed by any number of 9s followed by 4. - Harvey P. Dale, Nov 03 2024
EXAMPLE
74 = 2*R(73) = 2*37.
7994 = 2*R(7993) = 2*3997.
9321 = 39*R(9320) = 39*239.
MATHEMATICA
Select[Range[2, 8*10^7], Mod[#, IntegerReverse[#-1]]==0&] (* The program generates the first 26 terms of the sequence. *) (* Harvey P. Dale, Nov 03 2024 *)
CROSSREFS
Sequence in context: A347110 A225907 A107020 * A079808 A089658 A219100
KEYWORD
nonn,base,changed
AUTHOR
Claudio Meller, May 30 2009
EXTENSIONS
More terms from Claudio Meller, Jun 19 2009
a(23)-a(32) from Jason Yuen, Oct 06 2024
STATUS
approved