156816

Appears in sequences

• Theta series of lattice Kappa_8.at n=22A015235
• a(n) = (11*n)^2.at n=36A017390
• a(n) = (12*n)^2.at n=33A017522
• Number of points of L1 norm 4 in cubic lattice Z^n.at n=22A035598
• Coordination sequence for lattice D*_22 (with edges defined by l_1 norm = 1).at n=4A035611
• Coordination sequence for 22-dimensional cubic lattice.at n=4A035717
• Coordination sequence for C_22 lattice.at n=2A035759
• Coordination sequence for diamond structure D^+_22. (Edges defined by l_1 norm = 1.)at n=4A035887
• Smallest natural number k such that periodic part of 1/sqrt(k) is n (or 0 if no such number exists).at n=25A037211
• Number of nonnegative solutions of x1^2 + x2^2 + ... + x12^2 = n.at n=22A045853
• (Terms in A014762)/4.at n=14A051514
• a(1) = 0, a(2) = 16, a(2n+1) = 10*a(2n) - a(2n-1), a(2n) = 10*a(2n-1) - a(2n-2) + 16.at n=5A053410
• Number of nodes in virtual, "optimal", chordal graphs of diameter 4 and degree n+1.at n=41A067956
• Numbers k such that Sum_{d|k} d/core(d) > 2*k, where core(d) is the squarefree part of d.at n=31A069266
• a(1)=1; a(n) is the smallest integer > a(n-1) such that the sum of elements of the simple continued fraction for S(n)=1/a(1)+1/a(2)+...+1/a(n) equals n^2.at n=23A071183
• Determinant of n X n matrix defined by m(i,j)=1 if i^2+j^2 is a prime, m(i,j)=0 otherwise.at n=44A071524
• Squares of the form n+prime(n).at n=43A104992
• Numbers of the form (6^i)*(11^j), with i, j >= 0.at n=22A108698
• a(n) = least square such that the subsets of {a(1),...,a(n)} sum to 2^n different values.at n=16A138858
• Numbers which can be expressed as the product of numbers made of only sixs.at n=22A161144