OFFSET
1,1
COMMENTS
Limit n->infinity a(n)^(1/n) = 258.91660336499804152326399147605283475710016... . - Vaclav Kotesovec, Nov 19 2014
LINKS
Muhammad Kholilurrohman, Table of n, a(n) for n = 1..100
EXAMPLE
For n = 1 corresponds to a straight line graph with vertices {1,2,3,4}. Then the a(1) = 5 solutions are 1234, 121234, 123234, 123434, and 12123434.
CROSSREFS
KEYWORD
nonn
AUTHOR
Muhammad Kholilurrohman, Nov 18 2014
STATUS
approved