60880

Appears in sequences

• Related to representation as sums of squares.at n=28A002292
• a(n) = n^3 + n^2 + n + 1.at n=39A053698
• a(n) = (39^n - 1)/38.at n=4A218742
• Expansion of q^(-1/2) * k(q) * (1 - k(q)^4) * (K(q) / (Pi/2))^6 / 4 in powers of q where k(), k'(), K() are Jacobi elliptic functions.at n=28A225923
• Number of length n arrays of permutations of 0..n-1 with each element moved by -7 to 7 places and every three consecutive elements having its maximum within 4 of its minimum.at n=14A263702
• Totient numbers (A002202) of the form 1 + k + k^2 + k^3 +...+ k^i (i > 1, k > 1).at n=18A282090
• a(n) is the arithmetic mean of all multiplicative arithmetic functions f(n) with f(p^e) returning a monic degree 3 Littlewood polynomial of p.at n=38A386704