A128022 - cp's OEIS frontend

A128022 a(1)=1, a(n) = the multiple of n which is >= (sum{k=1 to n-1} a(k)) and is < (n + sum{k=1 to n-1} a(k)).

n	a(n)
1	1
2	2
3	3
4	8
5	15
6	30
7	63
8	128
9	252
10	510
11	1012
12	2028
13	4056
14	8120
15	16230
16	32464
17	64923
18	129852
19	259711
20	519420
21	1038828
22	2077658
23	4155318
24	8310648
25	16621300
26	33242586
27	66485178
28	132970348
29	265940701
30	531881400
31	1063762799
32	2127525600

[1, 2, 3, 8, 15, 30, 63, 128, 252, 510, 1012, 2028, 4056, 8120, 16230, 32464, 64923, 129852, 259711, 519420, 1038828, 2077658, 4155318, 8310648, 16621300, 33242586, 66485178, 132970348, 265940701, 531881400, 1063762799, 2127525600]

cp's OEIS Frontend

A128022 a(1)=1, a(n) = the multiple of n which is >= (sum{k=1 to n-1} a(k)) and is < (n + sum{k=1 to n-1} a(k)).

Table of values

List of values