246893

Appears in sequences

• Composite numbers m such that m'' = m'-1, where m' and m'' are the first and the second arithmetic derivatives of m.at n=21A189803
• Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.at n=6A305284
• Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.at n=3A305287
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.at n=48A305288
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3, 4 or 8 king-move adjacent elements, with upper left element zero.at n=51A305288