24034

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 12.at n=21A031600
• Triangular array generated by its row sums: T(n,0) = 1 for n >= 0, T(n,1) = r(n-1), T(n,k) = T(n,k-1) - (-1)^k * r(n-k) for k = 2, 3, ..., n, n >= 2, r(h) = sum of the numbers in row h of T.at n=52A054090
• T(n,n-2), array T as in A054090.at n=7A054094
• Number of polyiamonds with n cells that tile the plane by 180-degree rotation (Conway criterion) but not by translation.at n=16A075219
• Number of polyiamonds with n cells that tile the plane by 180-degree rotation (Conway criterion).at n=16A075220
• Number of polyiamonds with n cells that tile the plane by translation or by 180-degree rotation (Conway criterion).at n=16A075221
• Number of inequivalent binary linear codes of length n. Also the number of nonisomorphic binary matroids on an n-set.at n=12A076766
• Number of permutations of length n which avoid the patterns 2143, 2341, 3214.at n=9A116779
• Binomial transform A140456(n+1) (indecomposable involutions).at n=8A188144
• Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=4A255087
• Number of (n+2)X(5+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=3A255088
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=31A255091
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=32A255091
• Expansion of Product_{k>0} (1 + Sum_{m>0} x^(k*m!)).at n=48A304332
• a(n) is the surface area of the symmetric tower described in A221529 which is a polycube whose successive terraces are the symmetric representation of sigma A000203(i) (from i = 1 to n) starting from the top and the levels of these terraces are the partition numbers A000041(h-1) (from h = 1 to n) starting from the base.at n=23A345023
• Number of ordered n-tuples of integers from [ 1..n ] with no global factor.at n=8A345131