A213283 - cp's OEIS frontend

A213283 Number of 4-length words w over n-ary alphabet such that 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	0
1	1
2	9
3	36
4	118
5	315
6	711
7	1414
8	2556
9	4293
10	6805
11	10296
12	14994
13	21151
14	29043
15	38970
16	51256
17	66249
18	84321
19	105868
20	131310
21	161091
22	195679
23	235566
24	281268
25	333325
26	392301
27	458784
28	533386
29	616743
30	709515
31	812386
32	926064
33	1051281
34	1188793
35	1339380
36	1503846

[0, 1, 9, 36, 118, 315, 711, 1414, 2556, 4293, 6805, 10296, 14994, 21151, 29043, 38970, 51256, 66249, 84321, 105868, 131310, 161091, 195679, 235566, 281268, 333325, 392301, 458784, 533386, 616743, 709515, 812386, 926064, 1051281, 1188793, 1339380, 1503846]

cp's OEIS Frontend

A213283 Number of 4-length words w over n-ary alphabet such that 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