139776

Appears in sequences

• Expansion of 1/((1-2*x)*(1-6*x)*(1-8*x)).at n=5A016305
• Theta series of 52-dimensional lattice of det 2^26 and minimal norm 3.at n=3A018234
• Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 25 (most significant digit on right and removing all least significant zeros before concatenation).at n=19A029542
• Golden rectangular box numbers: a(n) = n*A007067(n)*A007067(A007067(n)).at n=32A050510
• Structured rhombic triacontahedral numbers (vertex structure 11).at n=25A100164
• Inverse of number triangle A128412.at n=39A128413
• Number triangle T(n,k) = 2^(n-k)*C(2*n,n-k).at n=39A128417
• If X_1,...,X_n is a partition of a 2n-set X into 2-blocks then a(n) is equal to the number of 5-subsets of X containing none of X_i, (i=1,...n).at n=11A130811
• Array t(n,k) = k^(2n)*(k^(2n)-1)*BernoulliB(2n)/(2n), n>=1, k>=2, absolute values read by ascending antidiagonals.at n=34A241066
• Number of partitions of 4n into distinct parts with equal sums of odd and even parts.at n=33A255001
• Expansion of (2 x^4*(5 - 12*x + 8*x^2))/(1 - 2*x)^4.at n=12A268462
• Number of 3 X 3 X 3 triangular 0..n arrays with some element less than a w, nw or ne neighbor exactly once.at n=11A271035
• Triangle T(n,m) (n >= 1, 0 <= m < n) giving coefficients of (n-1)! P_n, where P_n is the polynomial formula for row n of A213086.at n=50A273528