-241
domain: Z
Appears in sequences
- Signed distance of primes from LCM(1,...,x) being closest to it. Arguments x were selected from A000961 (powers of primes including primes) in order to use distinct values of LCM exactly once. When both closest primes are in the same distance, then negative were used.at n=62A058030
- a(n) = mu(n)*prime(n).at n=52A062007
- a(n) = 2^phi(n) - Sum_{j=0..n} binomial(phi(n), phi(j)).at n=23A073318
- Expansion of (1 - x)/(1 - 2*x + 3*x^2) in powers of x.at n=10A087455
- A Chebyshev transform of the Padovan numbers.at n=24A100049
- Coefficients of polynomials B(x,n) = ((1+a+b)*x - c)*B(x,n-1) - a*b*B(x,n-2) where B(x,0) = 1, B(x,1) = x, a=-b, b=1, c=1.at n=47A136531
- Polynomial expansion sequence : p(x)=1 + x - x^5 + x^9 + x^10.at n=43A143605
- Numerator of Hermite(n, 1/22).at n=2A159806
- A (4,-5) Somos-4 sequence.at n=4A171422
- Expansion of (1+x+x^2)*(1-8*x^3-14*x^4+8*x^7+x^8)/(1+x^4)^3.at n=22A188477
- a(n) = 2^n - 243.at n=1A220089
- a(n) = 2^n * Sum_{k=0..n} k^p*q^k, where p=3, q=-1/2.at n=13A232604
- G.f.: x^(k^2)/(mul(1-x^(2*i),i=1..k)*mul(1+x^(2*r-1),r=1..oo)) with k=3.at n=26A246579
- G.f.: x^((k^2+k)/2)/(mul(1-x^i,i=1..k)*mul(1+x^r,r=1..oo)) with k = 3.at n=59A246582
- Sums of wrecker ball sequences starting with n.at n=5A248961
- Table read by rows: row n contains the partial sums of the wrecker ball sequences starting with n, cf. A248939.at n=61A248973
- Table read by rows: row n contains the partial sums of the wrecker ball sequences starting with n, cf. A248939.at n=62A248973
- a(n) = (-1)^n*prime(n).at n=52A273960
- First difference of A293666.at n=34A293667
- Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of e.g.f.: exp(Product_{j=1..n} 1/(1+x^j) - 1).at n=33A294289