A213873 - cp's OEIS frontend

A213873 Number of words w where each letter of the ternary alphabet occurs n times and for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.

n	a(n)
0	1
1	6
2	15
3	106
4	1075
5	13326
6	188196
7	2914395
8	48349015
9	846167608
10	15456538890
11	292407484590
12	5695907466120
13	113735416237808
14	2319861446805120
15	48199341935153655
16	1017747539683821855
17	21799192392184931700
18	472889100118180757550
19	10375788309377599231200

[1, 6, 15, 106, 1075, 13326, 188196, 2914395, 48349015, 846167608, 15456538890, 292407484590, 5695907466120, 113735416237808, 2319861446805120, 48199341935153655, 1017747539683821855, 21799192392184931700, 472889100118180757550, 10375788309377599231200]

cp's OEIS Frontend

A213873 Number of words w where each letter of the ternary alphabet occurs n times and for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.

Table of values

List of values