127951

Properties

Appears in sequences

• a(n) = Sum_{k=n..2*n} T(n,k), T given by A027052.at n=12A027067
• Number of nX4 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=4A188562
• Number of nX5 binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=3A188563
• T(n,k)=Number of nXk binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=31A188567
• T(n,k)=Number of nXk binary arrays without the pattern 1 1 1 diagonally, vertically or horizontally.at n=32A188567
• Artiads (A001583) congruent to 1 mod 50 and for which 5 is a quintic residue.at n=20A271210
• Irregular table read by rows: T(n,k) is the number of k-gons, k>=3, formed inside a right triangle by the straight line segments mutually connecting all vertices and points on the two shorter edges whose positions equal the Farey series of order n.at n=34A359971
• Prime numbersat n=11984