150639

Appears in sequences

• Number of permutations of length n within distance 2 of a fixed permutation.at n=15A002524
• a(n) = T(n, 2*n-7), T given by A027960.at n=16A027969
• Number of arrays of -4..4 integers x(1..n) with every x(i) in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=6A193706
• T(n,k)=Number of arrays of -k..k integers x(1..n) with every x(i) being in a subsequence of length 1, 2, 3 or 4 with sum zero.at n=51A193710
• Number of length n arrays of permutations of 0..n-1 with each element moved by -2 to 2 places and the total absolute value of displacements not greater than 2*(n-1).at n=14A263899
• The PD_t(n) function (Number of tagged parts over all the partitions of n with designated summands).at n=26A293421