-1000

Appears in sequences

• Expansion of bracket function.at n=10A000750
• Generalized sum of divisors function.at n=28A002130
• Expansion of (1-25*x)^(2/5).at n=3A049392
• E.g.f. is obtained by reversion of e.g.f. for A053549.at n=4A053552
• a(n) = (a(n-1)a(n-5) + a(n-2)a(n-4) + a(n-3)^2)/a(n-6).at n=53A058232
• Signed triangle used to compute column sequences of array A078741 ((3,3)-Stirling2).at n=17A090219
• Triangle read by rows: T(n,k)=(-1)^k*(2n/(2n-k))5^(n-k)*binomial(2n-k,k) (0<=k<=n, n>=1).at n=10A104064
• Expansion of ((1+x)^4-(1+x)x^3)/((1+x)^5-x^5).at n=12A105370
• a(n) is the (1,2)-entry of the n-th power of the 2 X 2 matrix [0,-1;n-1,n-1].at n=5A109519
• Expansion of (1 + x)/(1 + 2*x + 2*x^3).at n=9A110524
• Matrix inverse of triangle A113287.at n=49A113288
• Expansion of (1-5x^2-7x^3-2x^4+x^6)/((1-x)(1-x^3)^2).at n=38A141365
• Hankel transform of A158500.at n=11A158501
• Expansion of f(q)^8 in powers of q where f() is a Ramanujan theta function.at n=33A161969
• Inverse of A038303, and generalization of A130595.at n=18A165293
• Totally multiplicative sequence with a(p) = 10*(p-3) for prime p.at n=25A167320
• Totally multiplicative sequence with a(p) = 10*(p-3) for prime p.at n=7A167320
• a(n) = (-1)^n*n*(n+1)*(2*n-5)/6.at n=14A167386
• Triangle defined by T(n, m) = -b(n) + b(m) + b(n-m), where b(n) = binomial(2*n, n)/(n + 1) = A000108(n), read by rows.at n=43A176602
• Triangle defined by T(n, m) = -b(n) + b(m) + b(n-m), where b(n) = binomial(2*n, n)/(n + 1) = A000108(n), read by rows.at n=37A176602