-869

Appears in sequences

• Row sums of a number triangle related to the Pell numbers.at n=29A110331
• Diagonal sums of number a triangle related to the Pell numbers.at n=58A110332
• a(0) = 121; for n>0, a(n) = a(n-1) - n + 1.at n=45A137517
• A triangle sequence of coefficients of polynomials with roots that are inverse primes: a(n)=Prime[n](a(n-1); p(x,n)=If[n == 0, 1, a[n - 1]*(x - a[n - 1])*Product[x + 1/Prime[i], {i, 1, n - 1}]]. (Correction to previous submission).at n=13A144456
• Numerators in triangle that leads to the (first) Bernoulli numbers A027641/A027642.at n=43A182397
• First differences of A000463.at n=59A188652
• Numerators in Taylor series expansion of (x/(exp(x) - 1))^(3/2)*exp(x/2).at n=6A222411
• a(n) = Sum_{i=1..n} (-1)^{i+1} prime(i)^2, where prime(k) denotes the k-th prime: alternating sum of the squares of the first n primes.at n=11A240860
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 419", based on the 5-celled von Neumann neighborhood.at n=21A272048
• Expansion of Sum_{k>=1} mu(k)*log(1 + x^k/(1 - x^k)^4)/k.at n=12A308291
• Dirichlet g.f.: zeta(s) / (zeta(s-1) * zeta(s-2)).at n=28A351654
• Value k at the n-th step of A371282, where multiplied values are positive and subtracted values are negative.at n=50A371295