56285

Appears in sequences

• Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 23.at n=31A051988
• Triangle T(n,k), 0 <= k <= n, read by rows: given by [ 1, 0, 3, 0, 5, 0, 7, 0, 9, 0, ...] DELTA [ 0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, ...] where DELTA is the operator defined in A084938.at n=40A102365
• Fourth column (m=3) of triangle A142963 divided by 8.at n=4A142966
• Triangle of the normalized A142963 and A156919 sequences.at n=31A156920
• Fifth right hand column (n-m=4) of the A156920 triangle.at n=3A156924
• Triangle T(n,k), 0 <= k <= n, given by (0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, ...) DELTA (1, 0, 3, 0, 5, 0, 7, 0, 9, 0, ...) where DELTA is the operator defined in A084938.at n=40A211399