31192

Appears in sequences

• Iterated heptagonal numbers (A000566), starting at 7.at n=3A099153
• Number of permutations in S_n avoiding the patterns 1342 and 2143.at n=9A109033
• Heptagonal numbers divisible by 7.at n=32A117795
• Number of non-monotonic functions from [k] to [n-k].at n=38A189711
• Number of n X 6 0..1 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope.at n=6A223590
• Number of nX7 0..1 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope.at n=5A223591
• The number of idempotents in the Jones (or Temperley-Lieb) monoid on the set [1..n].at n=10A225798
• Number of partitions of 4n into 4 parts.at n=40A238340
• a(n) = n*(5*n - 3)*(25*n^2 - 15*n - 6)/8.at n=7A264891
• Regular triangle where T(n,k) is the number of pairs of set partitions of {1,...,n} with meet {{1},...,{n}} and join of length k.at n=23A318389