194917

Properties

Appears in sequences

• Primes of the form pq + p + 1 where p < q are adjacent primes.at n=24A180932
• Number of tame connected graphs on n nodes.at n=2A220858
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=4A316956
• Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=3A316957
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=31A316960
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 8 king-move adjacent elements, with upper left element zero.at n=32A316960
• Prime numbersat n=17568