26724

Appears in sequences

• Number of orbits of length n under a map whose periodic points seem to be counted by A006953.at n=19A060171
• Indices of primes in sequence defined by A(0) = 97, A(n) = 10*A(n-1) - 63 for n > 0.at n=26A100998
• Numbers k such that k and k^2 use only the digits 1, 2, 4, 6 and 7.at n=30A136993
• Triangle T(n,m,p,q) = (p^(n-k)*q^k + p^k*q^(n-k))*(StirlingS2(n, k) + StirlingS2(n, n-k)) with p=2 and q=1, read by rows.at n=38A154915
• Triangle T(n,m,p,q) = (p^(n-k)*q^k + p^k*q^(n-k))*(StirlingS2(n, k) + StirlingS2(n, n-k)) with p=2 and q=1, read by rows.at n=42A154915
• Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock equal.at n=3A236723
• Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the upper median plus the lower median minus the minimum of every 2X2 subblock equal.at n=2A236724
• 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 equal.at n=17A236728
• 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 equal.at n=18A236728
• Number of convex hulls of vertices of a regular n-gon which include the centroid, up to dihedral symmetry.at n=19A291857
• Numbers k such that one of k-A001414(k) and k+A001414(k) is a prime and the other is the square of a prime.at n=11A358002
• Numbers k such that A075255(k) is the square of a prime.at n=21A386954