27436

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1, with a(0) = 0, a(1) = 9.at n=18A022314
• a(n) = 4*n^3.at n=19A033430
• a(n) = ceiling((n^3)/2).at n=38A036486
• a(n) = floor((n^3)/2).at n=38A036487
• Octahedral torus number: a(n) = n^2 + 2*(Sum_{k=1..n-1} k^2) - 2*(floor((n+1)/2)^2 + 2*(Sum_{k=1..floor((n+1)/2)-1} k^2)) + (1 - (-1)^n)/2.at n=37A050442
• Number of nonalternating prime knots with n crossings.at n=13A051763
• Largest proper divisor of n^3.at n=36A071378
• Row sums of triangle A074135.at n=37A074132
• Numbers of the form b^m/2 for even b and odd m > 2.at n=25A126032
• a(n) = denominator(3*(3+(-1)^n)/(n+1)^3).at n=37A129196
• The denominator of 2/n^3.at n=38A129204
• Interlacing n^3/2 and n^2(n + 1)/2.at n=37A130656
• Numbers of the form p^2 * q^3, where p,q are distinct primes.at n=38A143610
• Denominator of Euler(n, 1/19).at n=3A156661
• Members of A143610 for which both neighbors are squarefree.at n=15A166987
• Number of compositions of n into floor(j/3) kinds of j's for all j>=1.at n=27A176848
• a(n) = floor(1/{(1+n^4)^(1/4)}), where {} = fractional part.at n=18A184536
• Floor(1/{(8+n^4)^(1/4)}), where {}=fractional part.at n=37A184632
• Maximum value of k^2 * (n-k).at n=57A190798
• G.f.: A(x) = ( Sum_{n>=0} (-4)^n * x^(n^2) )^(-1/2).at n=9A193235