-854

Appears in sequences

• Start with 1, add the next number if one gets a prime then add the next number else subtract the next...at n=43A074170
• G.f. A(x) defined by: A(x)^5 consists entirely of integer coefficients between 1 and 5 (A083945); A(x) is the unique power series solution with A(0)=1.at n=8A084205
• Expansion of E.g.f. (1 + 2*x + x^2/2) * sech(x).at n=7A119883
• Expansion of 1/(1 + 3*x - 4*x^2 + x^3).at n=5A122600
• Expansion of 8 * eta(q)^7 / eta(q^7) + 49 * (eta(q) * eta(q^7))^3 in powers of q.at n=11A138809
• Irregular triangle read by rows: let c = -(x - x^2), b = (-1 - a + 2 x)/x, and a = 0, expansion of p(x, n) = (a + b*x)*p(x, n - 1) + c*p(x, n - 2).at n=50A139144
• a(0) = -1 and a(n) = (-1)^(n+1)*(3*n^2 - n + 4)/2 for n >= 1.at n=24A173247
• Triangle read by rows: coefficients of generating functions U_{1324,n}(y).at n=59A230858
• Array T(n,k) read by antidiagonals, where T(0,k) = -A226158(k) and T(n+1,k) = 2*T(n,k+1) - T(n,k).at n=28A245683
• G.f.: Product_{m>0} (1 - x^m + 2!*x^(2*m) - 3!*x^(3*m)).at n=39A293255
• Determinant of n X n matrix containing the first n^2 composites in increasing order.at n=14A321685
• a(n) = A353750(n) - A353749(n).at n=30A353757