128747

Properties

Appears in sequences

• a(n) = Sum_{k=0..floor(n/2)} T(n-k,k), T given by A026747.at n=22A026757
• Primes p = prime(k) such that prime(k) + prime(k+7) = prime(k+1) + prime(k+6) = prime(k+2) + prime(k+5) = prime(k+3) + prime(k+4).at n=24A064102
• Primes arising in A073946.at n=33A113943
• Minimum number k such that the k-th tetrahedral number is not smaller than n!.at n=16A308852
• Prime numbersat n=12052