19606

Appears in sequences

• a(0) = 1, a(n) = 29*n^2 + 2 for n>0.at n=26A010019
• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 86 ones.at n=21A031854
• Number of independent sets of vertices in graph K_5 X C_n (n > 2).at n=6A051930
• Integer part of the area of circles with prime radii.at n=21A097427
• Semiprimes that are the sum of 10 consecutive primes.at n=28A185347
• Equals one maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..1 nX2 array.at n=7A220283
• T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..1 nXk array.at n=37A220287
• T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..1 nXk array.at n=43A220287
• T(n,k)=Equals one maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 nXk array.at n=43A220537
• Array read by antidiagonals: T(m,n) = number of independent vertex sets in the complete prism graph K_m X C_n.at n=49A287376
• Number of 3 X n 0..1 arrays with every element equal to 1, 2 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.at n=11A302280