30394

Appears in sequences

• a(n) = (n+1)*(n+2)*(n+3)*(11*n^2 + 29*n + 20)/120.at n=11A114241
• Numbers k such that k^2 + 1 = p*q, p and q primes and |p-q| is square.at n=39A187401
• a(n) = binomial(n^2,3)/(2*n).at n=12A201106
• Binomial(n-1,3)+3*binomial(n-1,4)+6*binomial(n-1,5)+5*binomial(n-1,6).at n=14A235593
• a(n) = Sum_{i=1..floor((n-1)/2)} i * (n-i)^2.at n=26A308038