108225

Appears in sequences

• 4-dimensional figurate numbers: a(n) = (6*n-2)*binomial(n+2,3)/4.at n=24A002419
• Number of paraffins (see Losanitsch reference for precise definition).at n=29A006010
• Coefficient of x^4 in (1-x-x^2)^(-n).at n=35A006504
• Positive integers n such that n^2 = (x^4 - y^4)*(z^4 - t^4) where x>y and z>t are distinct pairs of integers with gcd(x,y)=gcd(z,t)=1.at n=15A147856
• Expansion of x*(1 + 4*x + x^2)/((1 - x)^5*(1 + x)^4).at n=49A290055
• Numbers with five neighboring primes on the hexagonal spiral board of odd numbers.at n=40A345654
• Integers k such that k^2 can be written as the sum of three positive fourth powers.at n=19A365657
• Numbers that are divisible by the squares of two distinct primes and whose arithmetic derivative (A003415) is a squarefree number of the form 4k+2.at n=34A368697