A135768 - cp's OEIS frontend

A135768 Indices of pentagonal numbers > 0 which are not the difference of 2 other pentagonal numbers > 0.

n	a(n)
1	1
2	2
3	3
4	6
5	8
6	9
7	11
8	15
9	18
10	24
11	27
12	54
13	81
14	96
15	128
16	135
17	162
18	216
19	243
20	288
21	303
22	384
23	423
24	459
25	486
26	519
27	591
28	639
29	648
30	683
31	729
32	783
33	864
34	879
35	891
36	1215
37	1458
38	1719
39	1944
40	2031
41	2043
42	2048
43	2151
44	2187
45	2463
46	2799
47	3231
48	3456
49	3543
50	3879
51	3903
52	4023

[1, 2, 3, 6, 8, 9, 11, 15, 18, 24, 27, 54, 81, 96, 128, 135, 162, 216, 243, 288, 303, 384, 423, 459, 486, 519, 591, 639, 648, 683, 729, 783, 864, 879, 891, 1215, 1458, 1719, 1944, 2031, 2043, 2048, 2151, 2187, 2463, 2799, 3231, 3456, 3543, 3879, 3903, 4023]

cp's OEIS Frontend

A135768 Indices of pentagonal numbers > 0 which are not the difference of 2 other pentagonal numbers > 0.

Table of values

List of values