18308

Appears in sequences

• Molien series for group G_{1,2}^{8} of order 1536.at n=34A051462
• Least k such that 10^n + k - 1 is the first of a pair of twin primes.at n=49A103129
• Number of permutations of 1..n containing the relative rank sequence { 246315 } at any spacing.at n=3A159158
• A213784/12.at n=30A213789
• Number of (n+1) X (1+1) 0..1 arrays with no 2 X 2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements.at n=8A251194
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements.at n=36A251201
• Number of permutations of [n] that avoid the patterns 2-41-3, 3-14-2, 2-14-3, and 4-5-3-1-2.at n=9A363810