24927

Appears in sequences

• Minimal m such that n^n-m and n^n+m are both primes, or -1 if there is no such m.at n=44A075468
• Number of permutations of 1..n with displacements restricted to {-7,-6,-5,-4,-3,-1,0,2}.at n=14A189601
• Number of nonnegative integers with property that their base 7/5 expansion (see A024642) has n digits.at n=26A245423
• Number of nX5 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=7A302209
• Number of chiral pairs of color patterns (set partitions) in a cycle of length n using exactly 4 colors (subsets).at n=11A320644
• Triangle read by rows: T(n,k) is the number of chiral pairs of cycles of length n (1) with a color pattern of exactly k colors or equivalently (2) partitioned into k nonempty subsets.at n=69A320647
• Irregular triangle read by rows: T(n,k) is the number of polyominoes of size k, i.e., connected subsets of k square cells (or vertices), of the n X n flat torus, up to cyclic shifts and reflections of rows and columns; 1 <= k <= n^2.at n=43A385383