A293883 - cp's OEIS frontend

A293883 Number of sets of nonempty words with a total of n letters over binary alphabet containing the second letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.

n	a(n)
2	1
3	3
4	8
5	20
6	47
7	106
8	237
9	522
10	1146
11	2485
12	5406
13	11644
14	25157
15	53964
16	116003
17	247987
18	530999
19	1131889
20	2415431
21	5135838
22	10927816
23	23182209
24	49199697
25	104154808
26	220543306
27	465996956
28	984704338
29	2076988457
30	4380764354
31	9225209588
32	19424813915
33	40844509107

[1, 3, 8, 20, 47, 106, 237, 522, 1146, 2485, 5406, 11644, 25157, 53964, 116003, 247987, 530999, 1131889, 2415431, 5135838, 10927816, 23182209, 49199697, 104154808, 220543306, 465996956, 984704338, 2076988457, 4380764354, 9225209588, 19424813915, 40844509107]

cp's OEIS Frontend

A293883 Number of sets of nonempty words with a total of n letters over binary alphabet containing the second letter such that within each prefix of a word every letter of the alphabet is at least as frequent as the subsequent alphabet letter.

Table of values

List of values