OFFSET
0,3
LINKS
EXAMPLE
a(2) = -7:
2, 3;
3, 1.
a(3) = -105:
2, 4, 5;
4, 5, 1;
5, 1, 3.
a(4) = -1810:
4, 3, 7, 1;
3, 7, 1, 2;
7, 1, 2, 5;
1, 2, 5, 6.
CROSSREFS
KEYWORD
sign,hard,more
AUTHOR
Stefano Spezia, Dec 22 2023
EXTENSIONS
a(6)-a(7) from Lucas A. Brown, Aug 26 2024
STATUS
approved