OFFSET
1,1
COMMENTS
a(n) has values in the range from sqrt(10n-1) to 3n (or, slightly weaker but prettier, in the range from 3*sqrt(n) to 3n).
EXAMPLE
a(1)=3 because 3^2+4^2=(5*1)^2; a(2)=6 because 6^2+8^2=(5+2)^2; a(5)=7 since 7^2+24^2=(5*5)^2.
CROSSREFS
KEYWORD
nonn
AUTHOR
Henry Bottomley, Jan 14 2002
EXTENSIONS
Offset corrected by Sean A. Irvine, Nov 01 2023
STATUS
approved