OFFSET
1,1
COMMENTS
In this sequence, the position of the multiplication sign in the reversed order is irrelevant, so, e.g., 11088 (48*231 and 132*84), 1176 (4*294 and 49*24) and 2548 (4*637 and 7*364) are in the sequence.
REFERENCES
Francesco Di Matteo, Sequenze ludiche, Game Edizioni (2015), page 34.
LINKS
Francesco Di Matteo, Table of n, a(n) for n = 1..132
Algebra.com, Question 265287
A. Marchini and F. Di Matteo, All the first 132 terms calculated
Math Forum at Drexel, Reversing the Digits
EXAMPLE
504 = 12*42 = 24*21;
756 = 12*63 = 36*21;
806 = 13*62 = 26*31;
868 = 4*217 = 7*124;
1008 = 12*84 = 48*21;
1148 = 14*82 = 28*41;
1176 = 4*294 = 49*24, etc.
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Francesco Di Matteo, Oct 03 2015
STATUS
approved