244404

Appears in sequences

• Expansion of x*( 1+2*x-x^2-6*x^3 ) / ( 1-9*x^2+12*x^4 ).at n=13A176968
• Numbers k such that both k and k^2 are sums of a twin prime pair.at n=33A213784
• Numbers k such that k and k+1 are both terms in A377209.at n=38A377271