|
|
A105305
|
|
Primes formed by reverse concatenation of 3 consecutive triangular numbers.
|
|
0
|
|
|
631, 1063, 276253231, 535652535151, 775076267503, 141961402813861, 162901611015931, 199001970119503, 326403238532131, 460564575345451, 593405899658653, 705007012569751, 723907201071631, 918069137890951
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
EXAMPLE
|
a(1)=631 because 631 is the prime formed by reverse concatenation of 3 consecutive triangular numbers i.e. 1,3 and 6.
|
|
CROSSREFS
|
|
|
KEYWORD
|
base,nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|