255816

Appears in sequences

• Even minus odd extensions of truncated 3 X 2n grid diagram.at n=5A007724
• a(n) = binomial(2*n+6,n+7)*(n^2+7*n+1)/(n+8) = f(n,n+6) where f is given in A034261.at n=7A034273
• Partial sums of A051879.at n=14A050405
• n = k^2 - (reversal of k)^2 for two different values of k.at n=22A087672
• Numerator coefficients for generators of lattice path enumeration square array A111910.at n=36A140136
• Numerator coefficients for generators of lattice path enumeration square array A111910.at n=37A140136
• Denominators of partial sums of a certain alternating series of inverse central binomial coefficients.at n=10A145558
• Number of (w,x,y,z) with all terms in {1,...,n} and w <= x > y <= z.at n=33A212246
• Number of permutations of 0..floor((3*n-1)/2) on even squares of an 3*n array such that each row, column, diagonal and (downwards) antidiagonal of even squares is increasing.at n=13A215789
• Number of permutations of 0..floor((3*n-2)/2) on odd squares of an 3Xn array such that each row, column, diagonal and (downwards) antidiagonal of odd squares is increasing.at n=13A215871
• Number of alternating permutations on 2n+1 letters that avoid a certain pattern of length 4 (see Lewis, 2012, Appendix, for precise definition).at n=6A217800
• Duplicate of A217800.at n=6A241958
• a(n) = n*(n+1)*(n+2)*(n+3)*(2*n+1)/12.at n=16A356251
• Numbers that can be represented in more than one way as the sum of cubes of three distinct positive numbers in arithmetic progression.at n=8A359055
• a(n) is the first positive number that can be represented in exactly n ways as the sum of cubes of three distinct integers in arithmetic progression.at n=4A359078