2371600

Appears in sequences

• Squares of tetrahedral numbers: a(n) = binomial(n+3,n)^2.at n=19A001249
• Squares of even triangular numbers.at n=26A014738
• Squares of even hexagonal numbers.at n=13A014772
• Squares of even tetrahedral numbers (A015220).at n=15A014796
• Sequence of distinct least squares such that the arithmetic mean of the first n squares is also a square.at n=12A236247
• Expansion of 1/AGM(1-64*x, sqrt((1-16*x)*(1-256*x))).at n=3A307810
• a(n) is the number of subsets of {1..n} that contain 3 even and 3 odd numbers.at n=44A331574
• Primitives exponential abundant numbers that are not primitives exponential unitary abundant.at n=19A391086
• Primitive exponential Zumkeller numbers that are not primitive exponential unitary Zumkeller numbers.at n=21A391091