OFFSET
1,3
COMMENTS
Not all terms are squares. For example, a(14) = 38, a(28) = 139 and a(56) = 4262 are not squares.
Not all terms are nonnegative. The first three negative terms are a(1354) = -290, a(7078) = -1363 and a(15722) = -2386.
LINKS
PROG
CROSSREFS
KEYWORD
sign
AUTHOR
Antti Karttunen, Aug 24 2020
STATUS
approved