27029
domain: N
Appears in sequences
- Inverse Moebius transform of A000029 (starting at term 0).at n=20A054155
- Number of partitions of n in which any two parts differ by at most 8.at n=45A218510
- a(n) = Sum_{i=0..n} digsum_5(i)^4, where digsum_5(i) = A053824(i).at n=42A231671
- a(n) = (2n-2)^3 + (2n-2) - 1.at n=15A255877
- Semiprimes whose prime factors are of equal binary length and which differ from each other in exactly two bit positions.at n=54A261074
- Number of separable partitions of n; see Comments.at n=40A325534
- a(n) = n * Sum_{d|n} sigma(d)^3 / d.at n=28A344043
- a(n) = Sum_{k=0..floor(n/4)} binomial(n,k) * binomial(n-3*k,k).at n=16A383523
- Number of subsets of {1..n} without all distinct lengths of maximal runs (increasing by 1).at n=15A384176