A247620 - cp's OEIS frontend

A247620 Start with a single hexagon; at n-th generation add a hexagon at each expandable vertex; a(n) is the sum of all label values at n-th generation. (See comment for construction rules.)

n	a(n)
0	1
1	7
2	25
3	67
4	157
5	343
6	721
7	1483
8	3013
9	6079
10	12217
11	24499
12	49069
13	98215
14	196513
15	393115
16	786325
17	1572751
18	3145609
19	6291331
20	12582781
21	25165687
22	50331505
23	100663147
24	201326437
25	402653023
26	805306201
27	1610612563
28	3221225293
29	6442450759
30	12884901697

[1, 7, 25, 67, 157, 343, 721, 1483, 3013, 6079, 12217, 24499, 49069, 98215, 196513, 393115, 786325, 1572751, 3145609, 6291331, 12582781, 25165687, 50331505, 100663147, 201326437, 402653023, 805306201, 1610612563, 3221225293, 6442450759, 12884901697]

cp's OEIS Frontend

A247620 Start with a single hexagon; at n-th generation add a hexagon at each expandable vertex; a(n) is the sum of all label values at n-th generation. (See comment for construction rules.)

Table of values

List of values