229309

Properties

Appears in sequences

• Number of nonempty subsequences {s(k)} of 1..n such that the difference sequence is palindromic.at n=29A053599
• Smallest k such that k*2*p(n)^2-1=q is prime, k*2*q^2-1=r, k*2*r^2-1=s, k*2*r^2-1=t, r, s, and t are also prime.at n=31A224492
• Expansion of ( -1-2*x+x^2+x^3 ) / (x^2+x-1)^3 .at n=16A261055
• Prime numbersat n=20375