A242510 - cp's OEIS frontend

A242510 Number of n-length words on {1,2,3} such that the maximal blocks (runs) of 1's have odd length, the maximal blocks of 2's have even length and the maximal blocks of 3's have odd length.

n	a(n)
0	1
1	2
2	3
3	8
4	15
5	32
6	67
7	138
8	289
9	600
10	1249
11	2600
12	5409
13	11258
14	23427
15	48752
16	101455
17	211128
18	439363
19	914322
20	1902721
21	3959600
22	8240001
23	17147600
24	35684481
25	74260082
26	154536643
27	321593688
28	669242575
29	1392706512
30	2898248707

[1, 2, 3, 8, 15, 32, 67, 138, 289, 600, 1249, 2600, 5409, 11258, 23427, 48752, 101455, 211128, 439363, 914322, 1902721, 3959600, 8240001, 17147600, 35684481, 74260082, 154536643, 321593688, 669242575, 1392706512, 2898248707]

cp's OEIS Frontend

A242510 Number of n-length words on {1,2,3} such that the maximal blocks (runs) of 1's have odd length, the maximal blocks of 2's have even length and the maximal blocks of 3's have odd length.

Table of values

List of values