A321237 - cp's OEIS frontend

A321237 Start with a square of dimension 1 X 1, and repeatedly append along the squares of the previous step squares with half their side length that do not overlap with any prior square; a(n) gives the number of squares appended at n-th step.

n	a(n)
1	1
2	8
3	28
4	68
5	148
6	308
7	628
8	1268
9	2548
10	5108
11	10228
12	20468
13	40948
14	81908
15	163828
16	327668
17	655348
18	1310708
19	2621428
20	5242868
21	10485748
22	20971508
23	41943028
24	83886068
25	167772148
26	335544308
27	671088628
28	1342177268
29	2684354548
30	5368709108
31	10737418228
32	21474836468

[1, 8, 28, 68, 148, 308, 628, 1268, 2548, 5108, 10228, 20468, 40948, 81908, 163828, 327668, 655348, 1310708, 2621428, 5242868, 10485748, 20971508, 41943028, 83886068, 167772148, 335544308, 671088628, 1342177268, 2684354548, 5368709108, 10737418228, 21474836468]

cp's OEIS Frontend

A321237 Start with a square of dimension 1 X 1, and repeatedly append along the squares of the previous step squares with half their side length that do not overlap with any prior square; a(n) gives the number of squares appended at n-th step.

Table of values

List of values