OFFSET
1,1
COMMENTS
There are infinitely many terms (see A214937 for a proof)
LINKS
Ivan N. Ianakiev, Table of n, a(n) for n = 1..1000
FORMULA
a(n) = sqrt(A214937(n))
EXAMPLE
2 and 7 are in the sequence because 2^2=1^2+2*3/2 and 7^2=2^2+9*10/2
CROSSREFS
KEYWORD
nonn
AUTHOR
Ivan N. Ianakiev, Aug 02 2012
STATUS
approved