A242495 - cp's OEIS frontend

A242495 Number of length n words on {1,2,3,4} with at most one consecutive 1 and at most two consecutive 2's and at most three consecutive 3's and at most four consecutive 4's.

n	a(n)
0	1
1	4
2	15
3	56
4	208
5	773
6	2872
7	10672
8	39655
9	147350
10	547523
11	2034486
12	7559742
13	28090486
14	104378617
15	387850022
16	1441172953
17	5355109869
18	19898515060
19	73938894118
20	274742112508
21	1020886629235
22	3793410119173
23	14095551768590

[1, 4, 15, 56, 208, 773, 2872, 10672, 39655, 147350, 547523, 2034486, 7559742, 28090486, 104378617, 387850022, 1441172953, 5355109869, 19898515060, 73938894118, 274742112508, 1020886629235, 3793410119173, 14095551768590]

cp's OEIS Frontend

A242495 Number of length n words on {1,2,3,4} with at most one consecutive 1 and at most two consecutive 2's and at most three consecutive 3's and at most four consecutive 4's.

Table of values

List of values