-4020

Appears in sequences

• G.f.: (1+x^2)^2*(x^4-6*x^3+1)/(x^2-1)^4.at n=21A115046
• Row 3 in rectangular array A292929.at n=19A294066
• Product_{n>=1} (1 + a(n) * x^n) = 1 + Sum_{n>=1} prime(n) * x^prime(n).at n=23A359177