166656

Appears in sequences

• Coordination sequence for F_4 lattice.at n=14A019558
• Theta series of lattice D3 tensor D3 (dimension 9, det. 4096, min. norm 4).at n=21A033693
• (1+e)-harmonic numbers: harmonic mean of (1+e)-divisors is an integer.at n=20A053783
• Ratio of quadruple Sum of k^2-1 to quadruple sum of k made into an integer sequence: (1/6)*(-1 + n)*(2 + n)*(3 + n)*(7 + n).at n=28A130863
• G.f. satisfies: A(x) = x/(1 - A(x+x^2)).at n=9A140046
• 18522n - 42.at n=8A157738
• Triangle read by rows: T(n,k) is the number of diagonalizable n X n matrices over GF(2) that have rank k, n >= 0, 0 <= k <= n.at n=23A296548
• Triangle read by rows: T(n,k) is the number of diagonalizable n X n matrices over GF(2) that have rank k, n >= 0, 0 <= k <= n.at n=25A296548
• a(n) = A341886(n)/2; numbers k such that A307437(k) is even.at n=28A341887
• Irregular triangular array read by rows. T(n,k) is the number of direct sum decompositions V_1 + V_2 + ... + V_m = GF(2)^n with the dimensions of the V_i corresponding to the k-th partition of n in canonical ordering, n >= 0, 1 <= k <= A000041(n).at n=21A358165