OFFSET
0,3
COMMENTS
a(6) <= -2579770.
LINKS
Wikipedia, Hankel matrix.
EXAMPLE
a(2) = -4:
1, 2;
2, 0.
a(3) = -74:
1, 3, 4;
3, 4, 0;
4, 0, 2.
a(4) = -1297:
3, 2, 6, 0;
2, 6, 0, 1;
6, 0, 1, 4;
0, 1, 4, 5.
CROSSREFS
KEYWORD
sign,hard,more
AUTHOR
Stefano Spezia, Dec 22 2023
STATUS
approved