A202117 - cp's OEIS frontend

A202117 Number of -1..1 arrays of n elements with first, second and third differences also in -1..1.

n	a(n)
1	3
2	7
3	13
4	19
5	27
6	35
7	47
8	65
9	91
10	129
11	185
12	267
13	387
14	563
15	821
16	1199
17	1753
18	2565
19	3755
20	5499
21	8055
22	11801
23	17291
24	25337
25	37129
26	54411
27	79739
28	116859
29	171261
30	250991
31	367841
32	539093
33	790075
34	1157907
35	1696991
36	2487057
37	3644955
38	5341937
39	7828985

[3, 7, 13, 19, 27, 35, 47, 65, 91, 129, 185, 267, 387, 563, 821, 1199, 1753, 2565, 3755, 5499, 8055, 11801, 17291, 25337, 37129, 54411, 79739, 116859, 171261, 250991, 367841, 539093, 790075, 1157907, 1696991, 2487057, 3644955, 5341937, 7828985]

cp's OEIS Frontend

A202117 Number of -1..1 arrays of n elements with first, second and third differences also in -1..1.

Table of values

List of values