A061297 - cp's OEIS frontend

A061297 a(n) = Sum_{ r = 0 to n} L(n,r), where L(n,r) (A067049) = lcm(n, n-1, n-2, ..., n-r+1)/lcm(1, 2, 3, ..., r).

n	a(n)
0	1
1	2
2	4
3	8
4	14
5	32
6	39
7	114
8	166
9	266
10	421
11	1608
12	1005
13	3980
14	6894
15	4206
16	8666
17	40904
18	49559
19	315478
20	162321
21	79180
22	269878
23	1647124
24	937553
25	1810092
26	8445654
27	7791356
28	3978238
29	33071544
30	19578861
31	283536170
32	327438714
33	117635956
34	742042967
35	154748984
36	88779589
37	1532487536
38	10514107742
39	3761632498

[1, 2, 4, 8, 14, 32, 39, 114, 166, 266, 421, 1608, 1005, 3980, 6894, 4206, 8666, 40904, 49559, 315478, 162321, 79180, 269878, 1647124, 937553, 1810092, 8445654, 7791356, 3978238, 33071544, 19578861, 283536170, 327438714, 117635956, 742042967, 154748984, 88779589, 1532487536, 10514107742, 3761632498]

cp's OEIS Frontend

A061297 a(n) = Sum_{ r = 0 to n} L(n,r), where L(n,r) (A067049) = lcm(n, n-1, n-2, ..., n-r+1)/lcm(1, 2, 3, ..., r).

Table of values

List of values