-1952

Appears in sequences

• Bisection of A002470.at n=23A002286
• Expansion of g.f. 1+x+(1+3*x+x^2)/(1+x)^3.at n=62A201163
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix from A204114, given by gcd(L(i+1), L(j+1)), where L=A000032 (Lucas numbers).at n=32A204115
• A signed triangle of V. I. Arnold for the Springer numbers (A001586).at n=21A256679
• G.f.: Product_{m>0} (1 - x^m + 2!*x^(2*m) - 3!*x^(3*m) + 4!*x^(4*m) - 5!*x^(5*m)).at n=25A293257
• Expansion of Sum_{k>=1} k * x^k * (1 - x^k) / (1 + x^k)^3.at n=31A326238
• a(n) = 2^n*E2_{n}(1/2) with E2_{n} the polynomials defined in A326480.at n=5A326483
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where T(n,k) = n! * Sum_{j=0..floor(n/2)} (-k/2)^j * binomial(n-j,j)/(n-j)!.at n=62A362277
• Expansion of e.g.f. exp(x - 3*x^2/2).at n=7A362278
• Expansion of 1 / Sum_{k>=0} x^(k*(3*k - 2)).at n=49A363275