-1856

Appears in sequences

• Binomial transform, alternating in sign, of the tribonacci numbers.at n=20A073358
• Coordination sequence for octagonal tiling is a(n)*sqrt(2) + A103909(n).at n=36A103908
• Expansion of (1+x)/(1+2x-2x^3).at n=19A124342
• A triangular sequence based on concepts of operations on existing sequences: in this case the H(x,n) ( A060821) traditional Hermite is differentiated twice : p(x,n)=-x^2*H''(x,n)+H(x,n).at n=27A137449
• Beta polynomials (coefficients in descending order, triangle read by rows).at n=42A177762
• Beta polynomials (coefficients in descending order, triangle read by rows).at n=43A177762
• The numerators of T(n, n+1) with T(0, m) = A164555(m)/A027642(m) and T(n, m) = T(n-1, m+1) - T(n-1, m), n >= 1, m >= 0.at n=7A191972
• Alternating sum of cubes, i.e., Sum_{k=0..n} k^p*q^k for p=3, q=-1.at n=15A232599
• Expansion of phi(q^5) / phi(q) in powers of q where phi() is a Ramanujan theta function.at n=17A261968
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 163", based on the 5-celled von Neumann neighborhood.at n=31A270456