57720

Appears in sequences

• a(n) = Sum_{k = 0..3} (n+k)! C(3,k).at n=6A001345
• Nearest integer to (n/2)^4.at n=31A011863
• T(2n+4,n), array T as in A055216.at n=8A055220
• a(n) = 2*(n-1)*(n^2 + 1).at n=30A071233
• Binomial triangle based on factorials.at n=39A076571
• Numbers that can be expressed as the difference of the squares of primes in exactly seven distinct ways.at n=15A092003
• n^4 - 1 divided by its largest fourth power divisor.at n=29A128251
• Sum of even products minus sum of odd products of different pairs of numbers from 1 to n.at n=30A134449
• 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=12A147856
• a(n) = floor((n + 1/2)^4).at n=15A219086
• Integer areas of integer-sided triangles where two sides are of square length.at n=26A232461
• a(n) = n*(7*n^2 + 15*n + 8)/6.at n=36A245301
• Number of length n+1 0..2 arrays with at most two downsteps in every n consecutive neighbor pairs.at n=10A255623
• Square array A(row,col) = Sum_{k=0..row} binomial(row,k)*(1+col+k)!, read by descending antidiagonals as A(0,0), A(0,1), A(1,0), A(0,2), A(1,1), A(2,0), ...at n=31A276588
• Transpose of A276588.at n=32A276589
• Numbers k such that A011772(k) > A344878(k) and A011772(k) is a divisor of A344875(k).at n=23A344595
• Primitive terms of A362804: terms k of A362804 such that k/2 is not a term of A362804.at n=8A362805