25209

Appears in sequences

• Number of permutations (p1,...,pn) such that 1 <= |pk - k| <= 2 for all k.at n=18A033305
• Number of ways of placing kings with no more than 4 mutual attacks on an n X n chessboard symmetric about the diagonal and under 90-degree rotation.at n=13A143891
• Number of n X 2 array permutations with each element moving one space diagonally, horizontally or vertically.at n=8A189348
• T(n,k) is the number of n X k array permutations with each element moving one space diagonally, horizontally or vertically.at n=46A189355
• Consider the succession rule (x, y, z) -> (z, y+z, x+y+z). Sequence gives z values starting at (0, 1, 2).at n=12A219788
• Number of 6-line partitions of n (i.e., planar partitions of n with at most 6 lines).at n=18A225196
• Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 5 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 5 6 or 7.at n=19A252246
• Sum of first n Honaker primes.at n=16A276255
• Numbers k such that (61*10^k - 1)/3 is prime.at n=16A295395