19762

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = (primes).at n=37A024867
• A level 11 weight 5 form.at n=11A065103
• Diagonal sums of number array A082105.at n=14A082107
• Expansion of x*(1+9*x+2*x^2)/((1-x)*(1-3*x+x^2)).at n=8A121990
• Products of three distinct primes p1, p2 and p3 (sphenic numbers) with p1<p2 and p3 is the concatenation of p1 with p2.at n=8A281592