A225918 - cp's OEIS frontend

A225918 a(n) is the least k such that f(a(n-1)+1) + ... + f(k) > f(a(n-2)+1) + ... + f(a(n-1)) for n > 1, where f(n) = 1/(n+3) and a(1) = 1.

n	a(n)
1	1
2	9
3	32
4	98
5	287
6	828
7	2377
8	6812
9	19510
10	55866
11	159958
12	457987
13	1311283
14	3754381
15	10749290
16	30776629
17	88117519
18	252291984
19	722344942
20	2068168017
21	5921435438
22	16953843853
23	48541071558
24	138979434294
25	397916291012
26	1139286366040
27	3261925819973
28	9339320097349
29	26739694491713

[1, 9, 32, 98, 287, 828, 2377, 6812, 19510, 55866, 159958, 457987, 1311283, 3754381, 10749290, 30776629, 88117519, 252291984, 722344942, 2068168017, 5921435438, 16953843853, 48541071558, 138979434294, 397916291012, 1139286366040, 3261925819973, 9339320097349, 26739694491713]

cp's OEIS Frontend

A225918 a(n) is the least k such that f(a(n-1)+1) + ... + f(k) > f(a(n-2)+1) + ... + f(a(n-1)) for n > 1, where f(n) = 1/(n+3) and a(1) = 1.

Table of values

List of values