27993

Appears in sequences

• Expansion of 3*(1+2*x-2*x^2)/((1-x)*(1-6*x^2)).at n=10A026551
• Numbers that are repdigits in base 6.at n=28A048331
• a(0)=0, a(1)=1, a(n) = 31*a(n-1) - 29*a(n-2).at n=4A084330
• Sum of diving indices of all 4k+3 primes in range ]2^n,2^(n+1)].at n=12A095106
• a(n) = 3*(6^n - 1)/5.at n=5A125682
• Ratio A191650(n+1)/A191650(n).at n=26A191651
• Number of nX5 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..2 nX5 array.at n=2A219125
• T(n,k)=Number of nXk arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..2 nXk array.at n=23A219128
• Number of 3Xn arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random 0..2 3Xn array.at n=4A219130
• Number of length 3 0..n arrays with each partial sum starting from the beginning no more than sqrt(2) standard deviations from its mean.at n=33A244906
• Numbers m such that there are precisely 19 groups of order m.at n=14A298910
• a(n) = floor(A026532(n)/5).at n=13A329114
• Numbers which are the product of two S-primes (A057948) in exactly three ways.at n=25A343828