A306315 - cp's OEIS frontend

A306315 Number of binary words of length n such that the difference between the number of 1's and the number of 0's is in the interval [-2,3] for every prefix and in the interval [-3,2] for every suffix.

n	a(n)
0	1
1	2
2	4
3	6
4	12
5	18
6	35
7	54
8	103
9	162
10	307
11	486
12	926
13	1458
14	2823
15	4374
16	8688
17	13122
18	26962
19	39366
20	84285
21	118098
22	265147
23	354294
24	838625
25	1062882
26	2664636
27	3188646
28	8499263
29	9565938
30	27197074
31	28697814
32	87261592
33	86093442
34	280596321
35	258280326
36	903916589

[1, 2, 4, 6, 12, 18, 35, 54, 103, 162, 307, 486, 926, 1458, 2823, 4374, 8688, 13122, 26962, 39366, 84285, 118098, 265147, 354294, 838625, 1062882, 2664636, 3188646, 8499263, 9565938, 27197074, 28697814, 87261592, 86093442, 280596321, 258280326, 903916589]

cp's OEIS Frontend

A306315 Number of binary words of length n such that the difference between the number of 1's and the number of 0's is in the interval [-2,3] for every prefix and in the interval [-3,2] for every suffix.

Table of values

List of values