43092

Appears in sequences

• a(n) = denominator of Bernoulli(2n)/(2n).at n=26A006953
• a(n) = Sum_{d|n, n/d=1 mod 4} d^3 - Sum_{d|n, n/d=3 mod 4} d^3.at n=34A050471
• Denominators from e.g.f. 1/(1-exp(-x)) - 1/x.at n=53A075180
• Smallest k such that k and k+n have the same prime signature that is different from all previous terms.at n=27A085876
• Triangle read by rows: expansion of p(x,n)=If[n == 0, 1, (x + 1)^n + 2^(n - 1)*Sum[Binomial[n, m]*x^m*(1 + x^(n - 2*m)), {m, 1, n - 1}]].at n=48A146765
• Triangle read by rows: expansion of p(x,n)=If[n == 0, 1, (x + 1)^n + 2^(n - 1)*Sum[Binomial[n, m]*x^m*(1 + x^(n - 2*m)), {m, 1, n - 1}]].at n=51A146765
• Triangle read by rows: matrix inverse of A154959.at n=41A154960
• a(n) = n*(2*n^2 + 5*n + 3).at n=27A163815
• First bisection of A164869.at n=27A164877
• Triangular array: the fusion of polynomial sequences P and Q given by p(n,x)=(x+2)^n and q(n,x)=(x+1)^n.at n=41A193724
• Mirror of the triangle A193724.at n=39A193725
• Number of pairs of intersecting diagonals in the interior and exterior of a regular n-gon.at n=24A211380
• Number of intersections of diagonals in the interior and exterior of a regular n-gon.at n=24A211383
• Smallest integer such that the sum of its n smallest divisors is a square.at n=42A289712
• a(1) = 24603, a(n) = n*a(n-1) but products that are not in A010784 are first reduced as in A320486 (see comments); continue until zero is reached.at n=11A321148
• Terms of A319928 that are congruent to 4 modulo 8: Numbers k == 4 (mod 8) such that there is no other m such that (Z/mZ)* is isomorphic to (Z/kZ)*, where (Z/kZ)* is the multiplicative group of integers modulo k.at n=34A372755