25586
domain: N
Appears in sequences
- Number of terms in a bordered skew determinant.at n=6A002772
- a(n) = F(n+2) - 2^[ (n+1)/2 ] - 2^[ n/2 ] + 1.at n=21A005673
- Denominators of continued fraction convergents to sqrt(958).at n=12A042855
- One half of numbers representable in at least two different ways as sums of four nonvanishing cubes. See A259060 for these numbers and their representations.at n=13A261241
- Number of aperiodic necklaces (Lyndon words) with k<=6 black beads and n-k white beads.at n=30A277631
- a(n) = Sum_{k=1..n} (k/gcd(n, k))^2.at n=42A332654
- Centered heptagonal numbers which are sphenic numbers.at n=9A360183