64058
domain: N
Appears in sequences
- Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 72.at n=1A031660
- "DIK" (bracelet, indistinct, unlabeled) transform of 1,2,3,4,...at n=14A032287
- a(n) = 2*L(n) + L(n-1) - n, L(n) = n-th Lucas number A000204(n).at n=20A133641
- Triangle T(n,k): the number of binary sequences of n zeros and n ones in which the longest run is of length k.at n=48A229756