56641

Appears in sequences

• Strong pseudoprimes to base 86.at n=16A020312
• Denominators of continued fraction convergents to sqrt(7).at n=16A041009
• Expansion of (1+31*x-2*x^2-2*x^3)/(1-16*x^2+x^4).at n=8A077397
• y-values in the solution to x^2 - 7*y^2 = -3.at n=8A202638
• Number of length 2+2 0..n arrays with the sum of second differences squared multiplied by some arrangement of +-1 equal to zero.at n=37A250321
• Number of compositions (ordered partitions) of n into multiplicatively perfect numbers (A007422).at n=37A282569
• Denominators of the continued fraction convergents to sqrt(7)/2.at n=8A294973
• Expansion of Sum_{n>=1} q^(n*(n-1)) / (1-q)^n.at n=46A321481