20054

Appears in sequences

• A generalized Fibonacci sequence.at n=55A001584
• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A000201 (lower Wythoff sequence), t = A001950 (upper Wythoff sequence).at n=37A024686
• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = A000201 (lower Wythoff sequence), t = A001950 (upper Wythoff sequence).at n=36A025119
• Probable extension of A013704.at n=23A025495
• Numbers n such that p1=2n+3, p2=4n+5, p3=6n+7 and p4=8n+9 are all prime.at n=14A105653
• Expansion of -x*(x^2+1)*(x+1)^2/((2*x^3+x^2-1)*(x^4+1)).at n=24A107852
• a(n) = 15*n^2 - 13*n.at n=37A263226
• a(n) = prime(n)^3 - prime(n) * prime(n^2).at n=11A291542