A253687 - cp's OEIS frontend

A253687 The total number of pentagons in a variant of pentagon expansion (side-to-side, two consecutive sides and one isolated side) after n iterations.

n	a(n)
1	1
2	4
3	10
4	21
5	39
6	64
7	94
8	129
9	167
10	212
11	262
12	317
13	375
14	440
15	510
16	585
17	663
18	748
19	838
20	933
21	1031
22	1136
23	1246
24	1361
25	1479
26	1604
27	1734
28	1869
29	2007
30	2152
31	2302
32	2457
33	2615
34	2780
35	2950
36	3125
37	3303
38	3488
39	3678
40	3873
41	4071
42	4276
43	4486
44	4701
45	4919
46	5144
47	5374
48	5609
49	5847
50	6092

[1, 4, 10, 21, 39, 64, 94, 129, 167, 212, 262, 317, 375, 440, 510, 585, 663, 748, 838, 933, 1031, 1136, 1246, 1361, 1479, 1604, 1734, 1869, 2007, 2152, 2302, 2457, 2615, 2780, 2950, 3125, 3303, 3488, 3678, 3873, 4071, 4276, 4486, 4701, 4919, 5144, 5374, 5609, 5847, 6092]

cp's OEIS Frontend

A253687 The total number of pentagons in a variant of pentagon expansion (side-to-side, two consecutive sides and one isolated side) after n iterations.

Table of values

List of values