295680

Appears in sequences

• Expansion of 1/((1+x)*(1-x)^9).at n=15A001780
• Triangle read by rows: T(n,k) = number of paths of n upsteps U and n downsteps D that contain k UUDs.at n=39A051288
• Larger central (or median) divisor of n!.at n=13A060777
• Duplicate of A060777.at n=13A061056
• Denominators of a(n+1) = Sum_{k=0..n} a'(k^2/n), where a(0) = a(1) = 1; and a'(x) = a(x) if x is an integer and is linearly interpolated otherwise.at n=14A071299
• Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n, having k ddu's [here u = (1,1) and d = (1,-1)].at n=46A091894
• Numbers with incrementally smallest ratio A002034(n)/n.at n=60A094371
• Divide integers 1..n into two sets, minimizing the difference of their products. This sequence is the larger product.at n=13A200744
• 1-quantum transitions in systems of N spin 1/2 particles, in columns by combination indices. Triangle read by rows, T(n, k) for n >= 1 and 0 <= k <= floor((n-1)/2).at n=32A213343
• Positions of records in A240606.at n=10A240619
• Smallest k such that the number of the first even exponents in prime power factorization of (2*k)! is n, or a(n)=0 if there is no such k.at n=19A241786
• Expansion of e.g.f. 1/(1 - x/(1 - (x^2/2!)/(1 - (x^3/3!)/(1 - (x^4/4!)/(1 - (x^5/5!)/(1 -... (x^n/n!)/(1 -...))))))), a continued fraction.at n=8A257544
• Expansion of e.g.f. 1/(1 - x/(1 - x^2/(2 - x^3/(3 - x^4/(4 - x^5/(5 - x^6/(6 - x^7/(7 - ...)))))))), a continued fraction.at n=8A295944
• Unitary near-perfect numbers: unitary abundant numbers n such that usigma(n) - 2n is a unitary divisor of n, where usigma(n) is the sum of unitary divisors of n (A034448).at n=0A303357
• a(n) is the denominator of the probability that a particular one of the A335573(n+1) fixed polyominoes corresponding to the free polyomino with binary code A246521(n+1) appears in the version of the Eden growth model described in A367671 when n square cells have been added.at n=48A367676
• a(n) = coefficient of sqrt(3) in the expansion of (3 + sqrt(2) + sqrt(3))^n.at n=8A377115
• Numbers that set records in A376567.at n=25A378630
• Numbers that set records in A378181.at n=23A378632
• Numbers that set records in A113901.at n=26A380146