43800

Appears in sequences

• Number of ways to color vertices of a hexagon using <= n colors, allowing only rotations.at n=8A006565
• a(n) = n*(n + 1)*(3*n + 1).at n=24A027903
• Theta series of 8-d 5-modular lattice Q_8(1) with det 625 and minimal norm 4.at n=16A028976
• Numbers having four 6's in base 9.at n=12A043480
• Number of n-bead necklaces with 8 colors.at n=6A054627
• T(n,k) = Sum_{d|k} phi(d)*n^(k/d)/k, triangle read by rows, T(n,k) for n >= 1 and 1 <= k <= n.at n=33A054630
• Numbers n such that 54 'Reverse and Add' steps are needed to reach a palindrome.at n=15A065321
• Least positive number missing from row n of Stern's diatomic array (see A049456 or A002487).at n=24A135510
• Triangle, read by rows, T(n, k) = 2*binomial(n, k)*binomial(n+1, k)/(k+1) - (k! - n! + (n-k)!).at n=40A176152
• Number of collinear point 5-tuples in an n X n cubical grid.at n=12A178257
• Number of distinct n X 2 toroidal 0..7 arrays.at n=2A184292
• Number of distinct n X 3 toroidal 0..7 arrays.at n=1A184293
• Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..7 arrays.at n=7A184294
• Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..7 arrays.at n=8A184294
• Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..7 arrays.at n=15A184294
• Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..7 arrays.at n=20A184294
• Number of permutations of the multiset {1,1,2,2,....,n,n} with exactly two consecutive equal terms.at n=4A209036
• a(n) = (2*n+23)*n*(n-1), a coefficient appearing in the formula a(n)*Pi/324+n+1 giving the average number of regions into which n random planes divide the cube.at n=25A248598
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to vertical reflections by two tiles that are each fixed under vertical reflection.at n=30A368260
• Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to vertical reflection by an asymmetric tile.at n=30A368261