-639
domain: Z
Appears in sequences
- Determinant of n X n Hankel matrix whose entries are t(i+j), 0 <= i, j < n, where t is the Thue-Morse sequence.at n=24A056887
- Expansion of (1-x)^(-1)/(1-2*x+2*x^3).at n=12A077853
- Expansion of (1-x)/(1+2*x+2*x^2-x^3).at n=12A078068
- An accelerator sequence for Catalan's constant.at n=11A094648
- Expansion of (1-5x^2-7x^3-2x^4+x^6)/((1-x)(1-x^3)^2).at n=30A141365
- Row sums of triangle A164658 (numerators of coefficients from Integral_{x} T(n,x), with T(n,x) Chebyshev polynomials of the first kind).at n=10A164662
- A symmetrical triangle sequence: T(n, k) = q^k + q^(n-k) - q^n, with q=3.at n=23A176225
- A symmetrical triangle sequence: T(n, k) = q^k + q^(n-k) - q^n, with q=3.at n=25A176225
- G.f. (1-x)/(2*sqrt(5*x^2 + 2*x + 1)) - 1/2.at n=10A249908
- Euler characteristics of the Brown poset at p = 2 for the symmetric group S_n.at n=6A263632
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 57", based on the 5-celled von Neumann neighborhood.at n=15A270078
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 105", based on the 5-celled von Neumann neighborhood.at n=15A270163
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood.at n=13A270320
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 405", based on the 5-celled von Neumann neighborhood.at n=13A271815
- First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 441", based on the 5-celled von Neumann neighborhood.at n=17A272224
- Expansion of 1/(Sum_{i>=0} q^(i^2)/Product_{j=1..i} (1 - q^j + q^(2*j))).at n=48A294598
- Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) = Sum_{j=0..n} (-k)^j * binomial(n,j)^3.at n=40A336179
- a(n) = Sum_{k=0..n} (-n)^k * binomial(n,k)^3.at n=4A336180