20692

Appears in sequences

• Number of two-rowed partitions of length 3.at n=44A001993
• Number n such that the sum of its proper evil divisors (A001969) equals n.at n=28A230587
• Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=4A237325
• Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=0A237329
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=10A237332
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=14A237332
• Least positive integer k such that k*n+1 = prime(p) and k^2*n+1 = prime(q) for some pair of primes p and q.at n=12A261437
• Triangle read by rows: T(n,k) is the number of free polyforms consisting of k unit square cells and n-k isosceles right triangular cells whose short sides have unit length. Cells are joined along sides of equal lengths.at n=37A391193