A280519 - cp's OEIS frontend

A280519 Triangle read by rows: T(n,k) = number of sequences of n positive integers with reciprocals adding up to k (k=1,2,...,n).

n	a(n)
1	1
2	1
3	1
4	10
5	3
6	1
7	215
8	41
9	6
10	1
11	12231
12	1115
13	105
14	10
15	1
16	2025462
17	74862
18	3466
19	215
20	15
21	1
22	1351857641
23	14294210
24	267281
25	8372
26	385
27	21
28	1
29	6255560531733
30	10837663111
31	57646358
32	727049
33	17318
34	630
35	28
36	1

[1, 1, 1, 10, 3, 1, 215, 41, 6, 1, 12231, 1115, 105, 10, 1, 2025462, 74862, 3466, 215, 15, 1, 1351857641, 14294210, 267281, 8372, 385, 21, 1, 6255560531733, 10837663111, 57646358, 727049, 17318, 630, 28, 1]

cp's OEIS Frontend

A280519 Triangle read by rows: T(n,k) = number of sequences of n positive integers with reciprocals adding up to k (k=1,2,...,n).

Table of values

List of values