100225

Appears in sequences

• Positive numbers k such that k and 5*k are anagrams in base 6 (written in base 6).at n=7A023067
• Irregular triangle read by rows: T(n,k) (n >= 1, 0 <= k <= (n-1)*(n-2)/2) = number of weakly connected subdigraphs of the transitive tournament on n nodes that have k arcs.at n=61A350610