63499

Properties

Appears in sequences

• Primes of the form 9n^2 - 5.at n=17A201960
• Hilltop maps: number of n X n binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 n X n array.at n=3A218803
• Hilltop maps: number of n X 4 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 n X 4 array.at n=3A218806
• T(n,k)=Hilltop maps: number of nXk binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 nXk array.at n=24A218810
• Hilltop maps: number of 4Xn binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 4Xn array.at n=3A218813
• Absolute discriminants of imaginary quadratic number fields with elementary bicyclic 7-class group (7,7).at n=0A359872
• G.f. A(x) satisfies A(x) = 1/( 1 + x*(1 - 9*x*A(x))^(1/3) ).at n=8A372013
• a(n) = Sum_{k=0..floor(n/2)} binomial(k+3,3) * binomial(n,k) * binomial(n-k,k).at n=9A392033
• Prime numbersat n=6365