1115239

Properties

Appears in sequences

• a(n+1) = Sum_{k=0..floor(2*n/5)} a(k) * a(n-k).at n=23A030037
• Numerator of Sum_{i+j+k=n, i,j,k>=1} (i*j)/k.at n=14A076174
• Prime numbers p such that 10^(j-1) < p < 10^j and p + 10^(j+k) are also prime numbers for k = 0 to 4.at n=1A224906
• Prime numbersat n=86836