25668

Appears in sequences

• Numbers occurring twice in A068627.at n=23A068628
• a(n) = n*(n+1)*(4*n+1)/2.at n=23A135713
• Numbers k such that k and k^2 use only the digits 2, 4, 5, 6 and 8.at n=21A137095
• The Wiener index of the ortho-polyphenyl chain with n hexagons (see the Dou et al. and the Deng references).at n=11A216108
• Number of distinct lines passing through at least three points in a triangular grid of side n.at n=36A234248
• Sum of the next to smallest parts in the partitions of 4n into 4 parts with smallest part = 1.at n=34A239195
• Numbers n such that the decimal expansions of both n and n^2 have 2 as smallest digit and 8 as largest digit.at n=37A257368
• Number of terms of A202259 with precisely n digits.at n=4A276473