52518

Appears in sequences

• The next smallest pair of numbers is taken so that a(2n-1)/a(2n) converges to Pi.at n=34A057082
• Numerators of increasingly better rational approximations to Pi with increasing denominators (3/1, 13/4, 16/5, 19/6, 22/7, 179/57, ...)at n=15A063674
• a(n) = A000031(n) - A001037(n).at n=40A066656
• Numbers whose anti-divisors sum to a perfect cube.at n=35A109351
• Number of nXnXn triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= 2.at n=12A166197
• Number of 12 X 12 X 12 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n.at n=2A166220