A240612 Number of n-length words w over a 6-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_{i-1}) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z.
1, 1, 2, 5, 14, 46, 165, 650, 2742, 12195, 56388, 267382, 1291017, 6304776, 31043333, 153739806, 764663187, 3817811679, 19117378411, 96034890298, 483633087406, 2442935438558, 12369440072730, 62816259353597, 319763315261222, 1632483727134416, 8354058837330795
Offset: 0
Keywords
Crossrefs
Column k=6 of A240608.