proposed
approved
proposed
approved
editing
proposed
From Andrew Howroyd, Mar 06 2024: (Start)
proposed
editing
editing
proposed
From Andrew Howroyd, Mar 06 2024:
a(16) = 95 = 16 + 5*14 + 4*2 + 1.
. . . . . . . . . . . . . . . .
X X X X X X X X X X X X X X X X
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X X X
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X X X
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X X X
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X X X
. X . . X . . X . . X . . X . .
. X . . X . . X . . X . . X X .
(End)
a(3*n) <= n*(3*n+1); a(3*n-1) <= 3*n^2 - 1; a(3*n-2) <= (n-1)*(3*n+1). Conjecturally these inequalities hold with equality for n > 1. - Andrew Howroyd, Mar 06 2024
approved
editing
proposed
approved
editing
proposed
Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ConnectedDominatingSetConnectedDominationNumberDominating SetDomination Number</a>.
approved
editing
reviewed
approved