A110953 - cp's OEIS frontend

A110953 Starting a priori with the fraction 1/1, the denominators of fractions built according to the rule: add top and bottom to get the new bottom, add top and 9 times the bottom to get the new top.

n	a(n)
1	2
2	12
3	40
4	176
5	672
6	2752
7	10880
8	43776
9	174592
10	699392
11	2795520
12	11186176
13	44736512
14	178962432
15	715816960
16	2863333376
17	11453202432
18	45813071872
19	183251763200
20	733008101376
21	2932030308352
22	11728125427712
23	46912493322240
24	187649990066176
25	750599926710272

[2, 12, 40, 176, 672, 2752, 10880, 43776, 174592, 699392, 2795520, 11186176, 44736512, 178962432, 715816960, 2863333376, 11453202432, 45813071872, 183251763200, 733008101376, 2932030308352, 11728125427712, 46912493322240, 187649990066176, 750599926710272]

cp's OEIS Frontend

A110953 Starting a priori with the fraction 1/1, the denominators of fractions built according to the rule: add top and bottom to get the new bottom, add top and 9 times the bottom to get the new top.

Table of values

List of values