A268323 - cp's OEIS frontend

A268323 Number of length-(n+1) 0..4 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero.

n	a(n)
1	2
2	4
3	11
4	33
5	113
6	418
7	1644
8	6729
9	28306
10	121290
11	526528
12	2307684
13	10189912
14	45272176
15	202209217
16	907511800
17	4091094290
18	18521091171
19	84191453893
20	384234672892
21	1760416403153
22	8096423923987
23	37376700482989
24	173184754445281

[2, 4, 11, 33, 113, 418, 1644, 6729, 28306, 121290, 526528, 2307684, 10189912, 45272176, 202209217, 907511800, 4091094290, 18521091171, 84191453893, 384234672892, 1760416403153, 8096423923987, 37376700482989, 173184754445281]

cp's OEIS Frontend

A268323 Number of length-(n+1) 0..4 arrays with new values introduced in sequential order, and with new repeated values introduced in sequential order, both starting with zero.

Table of values

List of values