18944

Appears in sequences

• Expansion of tanh(tan(x))*tan(x).at n=5A009812
• arctan(tanh(x)*tanh(x))=2/2!*x^2-16/4!*x^4+32/6!*x^6+18944/8!*x^8...at n=3A012696
• Gaps of 9 in sequence A038593 (upper terms).at n=16A038658
• Gaps of 10 in sequence A038593 (lower terms).at n=12A038659
• a(n) = 2^n*(binomial(n,2) + 1).at n=9A052481
• Triangle T(n,k) giving number of fixed 5 X k polyominoes with n cells (n >= 5, 1<=k<=n-4).at n=25A059681
• Expansion of (1 - 4*x - (1-2*x)*sqrt(1-4*x-4*x^2))/(8*x^3).at n=8A071357
• Expansion of (1-x)/(1+2*x^2-2*x^3).at n=21A078034
• a(n) = (n-1)^3*((n-2)^2 - 2*(n-3)).at n=8A079503
• a(n) = 8*n^3*((2*n-1)^2 - 4*n + 4).at n=4A079504
• Number of partitions of n such that the set of odd parts has only one element.at n=50A090868
• a(n) = (2*n+1)*2^floor((n+1)/2).at n=18A097578
• Maximum sum of products of successive pairs in a permutation of order n+1.at n=37A101986
• A convolution triangle of numbers based on A071356.at n=37A110681
• a(n) = (4*n - 3) * 2^(n - 1).at n=9A118415
• Row sums of triangle A133085.at n=11A133086
• Numbers of the form p^9*q where p and q are distinct primes.at n=10A179692
• a(n) = Product_{k>=1} floor(n^(1/k)).at n=73A190668
• Floor-Sqrt transform of numbers of A078679 (Grand Motzkin paths with no zigzags).at n=21A192683
• Numbers k such that (number of prime factors of k counted with multiplicity) less (number of distinct prime factors of k) = 8.at n=27A195092