A269965 - cp's OEIS frontend

A269965 Start with a square; at each stage add a square at each expandable vertex so that the ratio of the side of the squares at stage n+1 and at stage n is the golden ratio phi=0.618...; a(n) is the number of squares in a portion of the n-th stage (see below).

n	a(n)
5	1
6	3
7	10
8	26
9	63
10	145
11	332
12	760
13	1745
14	4007
15	9198
16	21102
17	48403
18	111021
19	254656
20	584132
21	1339893
22	3073459
23	7049906
24	16171066
25	37093175
26	85084313
27	195166404
28	447672720
29	1026871705
30	2355438303
31	5402904310
32	12393181766
33	28427480091
34	65206953349
35	149571708488

[1, 3, 10, 26, 63, 145, 332, 760, 1745, 4007, 9198, 21102, 48403, 111021, 254656, 584132, 1339893, 3073459, 7049906, 16171066, 37093175, 85084313, 195166404, 447672720, 1026871705, 2355438303, 5402904310, 12393181766, 28427480091, 65206953349, 149571708488]

cp's OEIS Frontend

A269965 Start with a square; at each stage add a square at each expandable vertex so that the ratio of the side of the squares at stage n+1 and at stage n is the golden ratio phi=0.618...; a(n) is the number of squares in a portion of the n-th stage (see below).

Table of values

List of values