84850

Appears in sequences

• Expansion of Product_{k>=2} 1/(1 - x^k)^bigomega(k), where bigomega(k) is the number of prime divisors of k counted with multiplicity (A001222).at n=42A293549
• Number of nX4 0..1 arrays with every element unequal to 0, 1, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=11A305343
• a(n) = Sum_{k=0..n} (-1)^k * binomial(3*n+2*k+1,n-k).at n=7A390544