39913

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+4).at n=30A015863
• Numbers n such that n and n+4 are both brilliant numbers (A078972).at n=23A083285
• Number of possible 3 X n arrangements of black and white squares that can form three consecutive rows in an n X n crossword puzzle.at n=6A133253
• Expansion of g.f. x/(1-7*x+8*x^2).at n=7A152268
• Number of nX4 arrays of permutations of 4 copies of 0..n-1 with no equal diagonal or antidiagonal neighbors and new values introduced sequentially from 0.at n=3A265655
• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with no equal diagonal or antidiagonal neighbors and new values introduced sequentially from 0.at n=24A265656
• Number of 4 X n arrays containing n copies of 0..4-1 with no equal diagonal or antidiagonal neighbors and new values introduced sequentially from 0.at n=3A265658
• Number of subsets of {1,2,...,n} such that no two elements differ by 1, 2, or 5.at n=29A375980