26592

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 81.at n=39A031579
• Numbers k such that 2^k mod k = 2^k mod k^2.at n=38A068535
• Coefficient of q^3 in nu(n), where nu(0)=1, nu(1)=b and, for n>=2, nu(n)=b*nu(n-1)+lambda*(1+q+q^2+...+q^(n-2))*nu(n-2) with (b,lambda)=(3,1).at n=9A074363
• Number of ternary Lyndon words of length n with exactly two 1's.at n=11A124720
• Numbers k that are not powers of 2 such that 2^k mod k = 2^k mod k^2; or A068535 with powers of 2 excluded.at n=23A125773
• Transform of 2^n by the aerated Catalan triangle A165408.at n=12A165409
• Triangle of coefficients of polynomials v(n,x) jointly generated with A208930; see the Formula section.at n=53A208930
• Triangle of coefficients of polynomials v(n,x) jointly generated with A209135; see the Formula section.at n=51A209136
• Number of (n+5)X9 0..1 matrices with each 6X6 subblock idempotent.at n=11A224573
• Number of nX4 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=5A316444
• Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=3A316446
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=39A316448
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 1, 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=41A316448
• Number of compositions of n into parts with distinct multiplicities and with exactly eight parts.at n=35A321778
• a(n) = ((2^n*n + i*(1 - i)^n - i*(1 + i)^n))/4, where i is the imaginary unit.at n=13A323225
• Expansion of Product_{i>=1, j>=0} (1 + x^(i*2^j)) / (1 - x^(i*2^j)).at n=17A327727