A212216 - cp's OEIS frontend

A212216 Number of representations of n as a sum of products of distinct pairs of positive integers, n = Sum_{k=1..m} i_kj_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_kj_k

n	a(n)
0	1
1	1
2	1
3	2
4	3
5	4
6	6
7	7
8	8
9	12
10	15
11	18
12	25
13	28
14	34
15	44
16	51
17	59
18	75
19	87
20	103
21	124
22	143
23	163
24	198
25	228
26	261
27	310
28	354
29	404
30	479
31	538
32	612
33	708
34	802
35	907
36	1049
37	1175
38	1320
39	1518
40	1711
41	1910
42	2187
43	2431
44	2724
45	3097
46	3447
47	3843
48	4348
49	4818
50	5373
51	6032
52	6693
53	7420

[1, 1, 1, 2, 3, 4, 6, 7, 8, 12, 15, 18, 25, 28, 34, 44, 51, 59, 75, 87, 103, 124, 143, 163, 198, 228, 261, 310, 354, 404, 479, 538, 612, 708, 802, 907, 1049, 1175, 1320, 1518, 1711, 1910, 2187, 2431, 2724, 3097, 3447, 3843, 4348, 4818, 5373, 6032, 6693, 7420]

cp's OEIS Frontend

A212216 Number of representations of n as a sum of products of distinct pairs of positive integers, n = Sum_{k=1..m} i_kj_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_kj_k

Table of values

List of values

cp's OEIS Frontend

A212216 Number of representations of n as a sum of products of distinct pairs of positive integers, n = Sum_{k=1..m} i_k*j_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_k*j_k

Table of values

List of values

A212216 Number of representations of n as a sum of products of distinct pairs of positive integers, n = Sum_{k=1..m} i_kj_k with i_k<=j_k, i_k<=i_{k+1}, j_k<=j_{k+1}, i_kj_k