49368

Appears in sequences

• Lower triangular array called S1hat(1) related to partition number array A107106.at n=57A144351
• Third column (m=3) of triangle A144351.at n=8A144352
• Vassiliev invariant of fourth order for the torus knots.at n=16A180324
• Expansion of (8+6*x)/(1-x)^5.at n=15A190048
• Number of 2 X 2 matrices with all elements in {0,1,...,n} and positive odd determinant.at n=22A210373
• a(n) = n^2*(n*(4*n + 3) + 3*n*(-1)^n - 4)/96.at n=32A302758
• a(n) = denominator(b(n)), where b(0) = b(1) = 1 and b(n) = n*b(n-1)/b(n-2) for n >= 1.at n=43A329813
• Nonsquare positive integers k such that k = a*b = c*m + b and b^2 = a*m + c where m > 1, 0 < a, b, c < m.at n=6A347168
• Numbers k such that the sum of the proper divisors of k that have the same binary weight as k is larger than k, and no subset of these divisors sums to k.at n=25A381071
• Numbers k for which sigma(k - x) + sigma(k + x) = 8*k has at least one nonnegative solution.at n=22A384841