33616

Appears in sequences

• Number of degree-n permutations of order dividing 4.at n=9A001472
• Table T(n,k) giving number of permutations of [1..n] with order dividing k, read by antidiagonals.at n=69A008307
• Expansion of 1/((1-8*x)*(1-10*x)).at n=4A016186
• Numbers whose cube is palindromic in base 7.at n=16A046237
• a(n) = floor(exp(n - gamma)), where gamma is Euler's constant.at n=11A078141
• Numbers n such that the best rational approximation to H(n) with denominator <=n is an integer, where H(n) denotes the n-th harmonic number (A001008/A002805).at n=19A079353
• 9th binomial transform of (0,1,0,1,0,1,.....), A000035.at n=5A081203
• a(n) = largest m such that the harmonic number H(m)= Sum_{i=1..m} 1/i is < n.at n=10A115515
• Numbers of the form x^5 + 10*x^3*y^2 + 5*x*y^4 (where x,y are integers).at n=35A135794
• Numbers n such that prime[(n + 1)^2] - prime[n^2] is a perfect square.at n=32A145290
• Number of collinear point 8-tuples in an n X n .. X n 5-dimensional cubical grid.at n=7A178280
• Array t(n,k): row n consists of the positive integers m for which the least splitter of H(m) and H(m+1) is n, where H denotes harmonic number.at n=55A227631
• The number of P-positions in the game of Nim with up to 5 piles, allowing for piles of zero, such that the number of objects in each pile does not exceed n.at n=13A241523
• 1 followed by the union of the terms > 2 in A002387 (or A004080) and A115515.at n=19A242654
• Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0.at n=6A256744
• Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 3 and no antidiagonal sum 3 and no row sum 0 and no column sum 0.at n=3A256747
• Expansion of phi(-q^6) / phi(-q) in powers of q where phi() is a Ramanujan theta function.at n=27A262968
• a(n) is the number of closed BCK (a.k.a. affine) lambda terms of size n.at n=12A281270
• Triangle T(n,k) read by rows: coefficients of polynomials P_n(t) defined in Formula section.at n=48A287030
• Array read by antidiagonals: T(n,k) is the number of Hamiltonian rooted triangulations with n internal nodes and k + 3 external nodes, n >= 0, k >= 0.at n=30A391153