180224

Appears in sequences

• Generalized tangent numbers d_(n,2).at n=31A000176
• Generalized class numbers c_(n,2).at n=11A000362
• Negated coefficients of Chebyshev T polynomials: [x^n](-T(n+6, x)), n >= 0.at n=10A001794
• a(n) = 11*4^n.at n=7A002089
• Numbers that are the sum of 11 positive 10th powers.at n=36A004811
• a(n) = 11*2^n.at n=14A005015
• Numbers whose prime factors are 2 and 11.at n=33A033848
• First differences of A045891.at n=17A034007
• a(n) = (n+1)*2^(n+4).at n=11A059165
• Coefficients of (-x^(2n-6)) in Chebyshev polynomial of degree 2n.at n=5A068548
• 15-almost primes (generalization of semiprimes).at n=9A069276
• a(n) = tau(Fibonacci(24*2^n))/(24*2^n) where tau(x) is the number of divisors of x (A000005(x)).at n=5A074699
• Smaller of two smallest consecutive numbers with 2n divisors.at n=14A075036
• Indices of triangular numbers listed in A075088.at n=21A076550
• a(n) = 4^n*(n^2 - n + 32)/32.at n=8A081910
• a(n) = (2*n+1) * (2*n)! / (sqrt(4*(n+1)*Product_{k=1..2*n+1} lcm(k, 2*n+2-k))).at n=19A082292
• Inverse binomial transform of n^2*3^(n-1).at n=11A084857
• Numbers of the form (4^i)*(11^j), with i, j >= 0.at n=29A107988
• a(0)=44; if n odd, a(n) = a(n-1)/2, otherwise a(n) = 4*a(n-1).at n=27A108213
• a(0)=44; if n odd, a(n) = a(n-1)/2, otherwise a(n) = 4*a(n-1).at n=24A108213