OFFSET
0,8
LINKS
Hamidreza Maleki Tirabadi, Table of n, a(n) for n = 0..30
FORMULA
See A390419.
EXAMPLE
a(7) = 6. First solution is:
Row 1: [0, 2] -> * ° * ° ° ° °
Row 2: [4, 6] -> ° ° ° ° * ° *
Row 3: [0, 2] -> * ° * ° ° ° °
Row 4: [4, 6] -> ° ° ° ° * ° *
Row 5: [0, 2] -> * ° * ° ° ° °
Row 6: [4, 6] -> ° ° ° ° * ° *
Row 7: [0, 2] -> * ° * ° ° ° °
CROSSREFS
KEYWORD
nonn
AUTHOR
Hamidreza Maleki Tirabadi, Nov 12 2025
STATUS
approved