A338852 - cp's OEIS frontend

A338852 a(n) = (7*floor(a(n-1)/3)) + (a(n-1) mod 3) with a(1) = 3.

n	a(n)
1	3
2	7
3	15
4	35
5	79
6	183
7	427
8	995
9	2319
10	5411
11	12623
12	29451
13	68719
14	160343
15	374131
16	872971
17	2036931
18	4752839
19	11089955
20	25876559
21	60378635
22	140883479
23	328728115
24	767032267
25	1789741955
26	4176064559
27	9744150635
28	22736351479
29	53051486783

[3, 7, 15, 35, 79, 183, 427, 995, 2319, 5411, 12623, 29451, 68719, 160343, 374131, 872971, 2036931, 4752839, 11089955, 25876559, 60378635, 140883479, 328728115, 767032267, 1789741955, 4176064559, 9744150635, 22736351479, 53051486783]

cp's OEIS Frontend

A338852 a(n) = (7*floor(a(n-1)/3)) + (a(n-1) mod 3) with a(1) = 3.

Table of values

List of values