30414
domain: N
Appears in sequences
- a(n) = Sum_{k=1..n} k*[ (n/k)*[ (n/k)*[ n/k ] ] ].at n=26A024933
- First differences of A006128.at n=34A138137
- Number of nX3 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 1 and 1 0 1 vertically.at n=8A207414
- Numbers k such that k and k+1 are the product of exactly four distinct primes.at n=37A318896