A268320 - cp's OEIS frontend

A268320 Number of length-(n+1) 0..n 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	114
6	435
7	1829
8	8377
9	41504
10	220958
11	1256927
12	7602273
13	48676925
14	328685063
15	2332565079
16	17344752142
17	134774766541
18	1091701884974
19	9198355199792
20	80459135884925
21	729337831748484
22	6840215461149149

[2, 4, 11, 33, 114, 435, 1829, 8377, 41504, 220958, 1256927, 7602273, 48676925, 328685063, 2332565079, 17344752142, 134774766541, 1091701884974, 9198355199792, 80459135884925, 729337831748484, 6840215461149149]

cp's OEIS Frontend

A268320 Number of length-(n+1) 0..n 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