37975

Appears in sequences

• a(n) = a(n-1) + a(n-6), with a(i) = 1 for i = 0..5.at n=45A005708
• Expansion of 1/(1 - x^6 - x^7 - x^8 - ...).at n=51A017900
• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AHT = AlPO4-H2 [Al6P6O12].8H2O starting from a T1 atom.at n=6A018974
• Smallest number m such that m and the product of digits of m are both divisible by 7n, or 0 if no such number exists.at n=34A073908
• Smallest number m such that m and the product of digits of m are both divisible by 5n, or 0 if no such number exists.at n=48A073911
• Expansion of x^3*(x-1)^2*(x+1) / (x^6-3*x^5+3*x^4-x+1).at n=45A135991
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 405", based on the 5-celled von Neumann neighborhood.at n=37A271814
• Numbers k such that (13*10^k + 197)/3 is prime.at n=26A276311
• a(n) is the index of the n-th nonattacking queen placed by a greedy algorithm on a subset of N^N (see Comments for details).at n=40A309817
• a(n) = Sum_{k=0..n} binomial(5*k,n-k).at n=9A360090
• a(n) is the least k such that k, k+1 and 2*k+1 all have exactly n prime factors counted with multiplicity.at n=4A361874
• Irregular triangle read by rows: T(n,k) (0 <= k <= n^2) are coefficients of cluster density function for site percolation on an n X n 2D square lattice with periodic boundary conditions.at n=38A365941
• a(n) = Sum_{k=0..floor(n/2)} binomial(3*n-5*k,k).at n=15A373638
• a(n) = Sum_{k=0..floor(n/3)} binomial(2*n-5*k-1,k).at n=23A373654
• Number of compositions of 6*n-3 into parts 1 and 6.at n=7A373958
• a(n) = A276086(n)*A276086(sigma(n)-n) - A276086(sigma(n)), where A276086 is the primorial base exp-function, and sigma is the sum of divisors function.at n=44A388281