A053599 - cp's OEIS frontend

A053599 Number of nonempty subsequences {s(k)} of 1..n such that the difference sequence is palindromic.

n	a(n)
1	1
2	3
3	7
4	13
5	23
6	37
7	59
8	89
9	135
10	197
11	291
12	417
13	607
14	861
15	1243
16	1753
17	2519
18	3541
19	5075
20	7121
21	10191
22	14285
23	20427
24	28617
25	40903
26	57285
27	81859
28	114625
29	163775
30	229309
31	327611
32	458681
33	655287
34	917429
35	1310643
36	1834929
37	2621359
38	3669933
39	5242795
40	7339945

[1, 3, 7, 13, 23, 37, 59, 89, 135, 197, 291, 417, 607, 861, 1243, 1753, 2519, 3541, 5075, 7121, 10191, 14285, 20427, 28617, 40903, 57285, 81859, 114625, 163775, 229309, 327611, 458681, 655287, 917429, 1310643, 1834929, 2621359, 3669933, 5242795, 7339945]

cp's OEIS Frontend

A053599 Number of nonempty subsequences {s(k)} of 1..n such that the difference sequence is palindromic.

Table of values

List of values