24156

Appears in sequences

• Coordination sequence for sigma-CrFe, Position Xd.at n=39A009959
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n-1)/2.at n=19A047173
• Number of nonempty subsets of {1,2,...,n} in which exactly 2/3 of the elements are <= (n-2)/2.at n=19A047184
• Number of 3 X n (0,1) matrices such that each row and each column is nondecreasing or nonincreasing.at n=21A086113
• Triangle of nonzero coefficients of the Airy zeta functions expressed as polynomials of X = 3^(5/6)Gamma(2/3)^2/(2Pi).at n=25A096631
• Elias omega coded prime numbers represented in decimal.at n=35A147764
• Expansion of x*( 1+2*x-x^2-6*x^3 ) / ( 1-9*x^2+12*x^4 ).at n=10A176968
• Number of (n+1) X (1+1) 0..4 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12.at n=5A234107
• Number of (n+1) X (6+1) 0..4 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12.at n=0A234112
• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12.at n=15A234114
• T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12.at n=20A234114
• Number of partitions p of n such that round(mean(p)) is not a part of p; here, round(x) means floor(x + 1/2).at n=42A241734
• Start with a single cell at coordinates (0, 0), then iteratively subdivide the grid into 3 X 3 cells and remove the cells whose sum of modulo 2 coordinates is 2; a(n) is the number of cells after n iterations.at n=5A285391
• Numbers k such that k and k+1 have the same sum of powerful divisors (A183097) and this sum is larger than 1.at n=5A349063
• G.f. A(x) satisfies A(x) = 1 + x + x^4*A(x)^2.at n=31A366554