111512

Appears in sequences

• Number of permutations p of {1,...,n} such that exactly two elements of {p(1),...,p(i-1)} are between p(i) and p(i+1) for all i from 3 to n-1.at n=24A187817
• Composite numbers whose product of digits is 10.at n=38A201057
• Total number of sides of a tetraflake-like fractal after n iterations, a(1) = 16 (see comments).at n=6A235643
• T(n,k)=Number of nXk 0..2 arrays with no element equal to any value at offset (-1,-2) (-2,-1) or (-1,0) and new values introduced in order 0..2.at n=47A274728