42185
domain: N
Appears in sequences
- a(n) = A026615(2*n-1, n-1).at n=8A026619
- a(n) = A026615(n, floor(n/2)).at n=17A026621
- "DHK[ 7 ]" (bracelet, identity, unlabeled, 7 parts) transform of 1,1,1,1,...at n=21A032248
- Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+2y>0.at n=22A211624
- a(n) is the smallest j which satisfies (j^2 + k)/(j + k^2) = n where j,k are integers and j >= k > 0.at n=40A290332
- The successive approximations up to 7^n for 7-adic integer 5^(1/5).at n=6A309453