A298370 - cp's OEIS frontend

A298370 a(n) = a(n-1) + a(n-2) + 2 a(floor(n/2)) + 3 a(floor(n/3)) + ... + n a(floor(n/n)), where a(0) = 1, a(1) = 2, a(2) = 3.

n	a(n)
0	1
1	2
2	3
3	15
4	38
5	83
6	190
7	356
8	695
9	1254
10	2267
11	3861
12	6829
13	11417
14	19340
15	32076
16	53545
17	87784
18	145048
19	236589
20	387765
21	631106
22	1028866
23	1670013
24	2716595
25	4404599
26	7148426
27	11582096
28	18776334
29	30404300
30	49256015
31	79735758
32	129111774
33	208972513
34	338277831

[1, 2, 3, 15, 38, 83, 190, 356, 695, 1254, 2267, 3861, 6829, 11417, 19340, 32076, 53545, 87784, 145048, 236589, 387765, 631106, 1028866, 1670013, 2716595, 4404599, 7148426, 11582096, 18776334, 30404300, 49256015, 79735758, 129111774, 208972513, 338277831]

cp's OEIS Frontend

A298370 a(n) = a(n-1) + a(n-2) + 2 a(floor(n/2)) + 3 a(floor(n/3)) + ... + n a(floor(n/n)), where a(0) = 1, a(1) = 2, a(2) = 3.

Table of values

List of values