A274008 - cp's OEIS frontend

A274008 Number of length-n ternary sequences where the sum of each block differs by at most 1 from every other block of the same length.

n	a(n)
0	1
1	3
2	7
3	15
4	27
5	47
6	71
7	107
8	151
9	207
10	271
11	355
12	447
13	563
14	691
15	835
16	995
17	1187
18	1391
19	1631
20	1887
21	2167
22	2467
23	2811
24	3171
25	3571
26	3995
27	4455
28	4939
29	5479
30	6035
31	6651
32	7299
33	7987
34	8707
35	9475
36	10267
37	11131
38	12031
39	12979
40	13959
41	15019
42	16103
43	17271
44	18479
45	19735

[1, 3, 7, 15, 27, 47, 71, 107, 151, 207, 271, 355, 447, 563, 691, 835, 995, 1187, 1391, 1631, 1887, 2167, 2467, 2811, 3171, 3571, 3995, 4455, 4939, 5479, 6035, 6651, 7299, 7987, 8707, 9475, 10267, 11131, 12031, 12979, 13959, 15019, 16103, 17271, 18479, 19735]

cp's OEIS Frontend

A274008 Number of length-n ternary sequences where the sum of each block differs by at most 1 from every other block of the same length.

Table of values

List of values