838861

Appears in sequences

• Numbers n such that game of n X n Button Madness need have no solution; this lists only the primitive elements of the set.at n=27A007802
• Expansion of (1-x)/(1-2*x+x^2-2*x^3).at n=21A007909
• Expansion of 1/((1-2*x)*(1+x^2)).at n=20A007910
• a(n) = (1 - (-4)^n)/5.at n=10A014985
• Gaussian binomial coefficient [ n,10 ] for q=-4.at n=1A015390
• a(n) = 3*a(n-1) + 4*a(n-2), a(0) = 0, a(1) = 1.at n=11A015521
• Cyclotomic polynomials at x=4.at n=22A019322
• Cyclotomic polynomials at x=-4.at n=11A020503
• Zsigmondy numbers for a = 4, b = 1: Zs(n, 4, 1) is the greatest divisor of 4^n - 1^n (A024036) that is relatively prime to 4^m - 1^m for all positive integers m < n.at n=21A064080
• a(n) = (lcm_{k=0..n} (2^k + 1))/(lcm_{k=0..n-1} (2^k + 1)).at n=21A066845
• Expansion of 1/(1-x+2*x^3).at n=40A077950
• Expansion of 1/(1-x+2*x^3).at n=42A077950
• Expansion of 1/(1+x-2*x^3).at n=43A077973
• Expansion of 1/(1+x-2*x^3).at n=42A077973
• Expansion of 1/(1+x-2*x^3).at n=40A077973
• Triangular array read by rows: row s contains integers of the form (2^s+1)/(2^r+1) in order of increasing r <= s-1.at n=22A079665
• a(n) = sigma_4(n^2)/sigma_2(n^2).at n=31A084218
• Record values in A091023.at n=10A091052
• a(n) = a(n-1) + 2^(k(n)), where k(n) is the n-th term of the sequence formed by k(1)=0 together with the numbers A042964.at n=10A113876
• Numbers k such that A003313(k) = A003313(10*k).at n=1A117151