74072
domain: N
Appears in sequences
- Number of ways to pair up {1..2n} so sum of each pair is prime.at n=10A000341
- Array read by antidiagonals: T(n,k) is the number of n-step king's tours on a k X k board summed over all starting positions.at n=50A186861
- Number of 6-step king's tours on an n X n board summed over all starting positions.at n=4A186865
- Expansion of Product_{k>=1} 1/(1 - k^2*x^k)^k.at n=9A285674
- Growth series for group with presentation < S, T : S^2 = T^3 = (S*T)^7 = 1 >.at n=44A298805
- Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=3A302805
- T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=31A302808
- Number of 4Xn 0..1 arrays with every element equal to 0, 1, 2, 3 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=4A302810