231990

Appears in sequences

• Number of nX2 1..3 arrays containing at least one of each value, and all equal values connected.at n=15A166756
• Number of (w,x,y,z) with all terms in {1,...,n} and w<=2x and y>=3z.at n=37A212515
• Number of ways to partition the set of vertices of a convex {n+8}-gon into 3 non-intersecting polygons.at n=37A350116
• Products of 6 distinct primes that are sandwiched between semiprime numbers.at n=27A378627