1299600

Appears in sequences

• Squares of tetrahedral numbers: a(n) = binomial(n+3,n)^2.at n=17A001249
• Squares of even tetrahedral numbers (A015220).at n=13A014796
• Squares which are the sum of twin prime pairs.at n=26A037072
• Perfect powers which are the sum of twin prime pairs.at n=29A119767
• Areas of primitive Heronian triangles K which are perfect squares.at n=26A248108
• Numbers i such that Fibonacci(i) is divisible by i+k for k=0,1,2,3,4.at n=15A298686
• a(n) is the number of subsets of {1..n} that contain 3 even and 3 odd numbers.at n=40A331574
• Primitives exponential abundant numbers that are not primitives exponential unitary abundant.at n=11A391086
• Primitive exponential Zumkeller numbers that are not primitive exponential unitary Zumkeller numbers.at n=12A391091