A190072 - cp's OEIS frontend

A190072 Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero.

n	a(n)
1	4
2	12
3	36
4	76
5	143
6	233
7	366
8	536
9	760
10	1028
11	1363
12	1751
13	2221
14	2758
15	3387
16	4096
17	4907
18	5804
19	6819
20	7931
21	9174
22	10525
23	12021
24	13631
25	15401
26	17299
27	19366
28	21572
29	23959
30	26490
31	29220
32	32114
33	35210
34	38476
35	41963
36	45629
37	49527
38	53618
39	57953
40	62489
41	67285

[4, 12, 36, 76, 143, 233, 366, 536, 760, 1028, 1363, 1751, 2221, 2758, 3387, 4096, 4907, 5804, 6819, 7931, 9174, 10525, 12021, 13631, 15401, 17299, 19366, 21572, 23959, 26490, 29220, 32114, 35210, 38476, 41963, 45629, 49527, 53618, 57953, 62489, 67285]

cp's OEIS Frontend

A190072 Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of div(x(i),x(i+1)), where div(a,b)=a/b produces the integer quotient implying a nonnegative remainder, equal to zero.

Table of values

List of values