219931

Properties

Appears in sequences

• Lower ends of record gaps between prime-indexed primes.at n=21A280080
• Sum T(n,k) of the entries in the k-th blocks of all set partitions of [n]; triangle T(n,k), n>=1, 1<=k<=n, read by rows.at n=38A285362
• Sum of the entries in the third blocks of all set partitions of [n].at n=6A285365
• Prime numbersat n=19609