20461

Appears in sequences

• a(n) = ceiling(n*phi^15), where phi is the golden ratio, A001622.at n=15A004970
• Numbers whose set of base-11 digits is {1,4}.at n=42A032823
• Denominators of continued fraction convergents to sqrt(364).at n=10A041689
• Sum of the primes in ordered 3 X 3 prime squares.at n=37A105089
• Least k such that floor(k/r^n)=n, where r = golden ratio = (1+sqrt(5))/2.at n=14A182614
• Centered 44-gonal numbers.at n=30A195318
• Number of length 4+1 0..n arrays with the sum of the minimum of each adjacent pair multiplied by some arrangement of +-1 equal to zero.at n=7A250421
• Sum of numbers in the n-th antidiagonal of the reciprocity array of 2.at n=43A259580
• Number of length-4 0..n arrays with no adjacent pair x,x+1 followed at any distance by x+1,x.at n=10A268458
• a(n) = 21*n^2 - 33*n + 13.at n=31A289134
• Square array A(n,k), n >= 0, k >= 1, read by antidiagonals, where column k is the expansion of e.g.f. exp(Sum_{j=1..k} j*x^j).at n=61A293718
• Number of vertices formed in a square by straight line segments when connecting the four corner vertices to the points dividing the sides into n equal parts.at n=35A355949