43290

Appears in sequences

• Numbers n such that phi(n) + 6 | sigma(n).at n=18A015797
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 16.at n=26A031694
• a(n+1) = floor((1/n)*(Sum_{k=1..n} a(k)^((n+1)/k))), given a(0)=1, a(1)=3, a(2)=8.at n=10A079121
• Least sum (n+1) + (n+2) + ... + (n+k) that is a multiple of the n-th triangular number, n(n+1)/2.at n=35A110351
• Expansion of g.f. x*(1+x+2*x^2+2*x^3+5*x^4+5*x^5-3*x^6+2*x^7-x^8-x^9)/(1-6*x^6-x^12).at n=35A116559
• Expansion of g.f. x*(1+x+2*x^2+2*x^3+5*x^4+5*x^5-3*x^6+2*x^7-x^8-x^9)/(1-6*x^6-x^12).at n=36A116559
• a(n)=6*a(n-1)+a(n-2), n>2 ; a(0)=1, a(1)=5, a(2)=30 .at n=6A155195
• a(n) = 256*n^2 + 2*n.at n=12A158230
• a(n) = 676*n^2 + 26.at n=8A158643
• a(n) = 6*a(n-2) + a(n-4), where a(0) = 5, a(1) = 8, a(2) = 30, a(3) = 49.at n=10A228472
• Positive numbers m such that m^2 - 1 divides 4^m - 1.at n=25A271842
• a(n) = Sum_{k=1..n-1} lcm(lcm(n, k), lcm(n, n-k)).at n=25A338798
• Numbers m such that the largest digit in the decimal expansion of 1/m is 3.at n=34A350814
• G.f. A(x) satisfies 1 + 2*A(x) = Sum_{n>=0} (x + A(x)^n)^n.at n=10A380061