OFFSET
1,1
EXAMPLE
4719393690^2 = 22272676801211816100, 62227267680121181610025 = 249453938995^2.
PROG
(PARI) isok(n) = issquare(eval(concat([6, Str(n^2), 25]))) \\ Michel Marcus, Jul 20 2017
CROSSREFS
KEYWORD
nonn,base,more
AUTHOR
Chai Wah Wu, Nov 22 2014
EXTENSIONS
a(5) from Chai Wah Wu, Jul 19 2017
STATUS
approved