A350935 - cp's OEIS frontend

A350935 a(n) is the smallest number m such that tau(m-1) = tau(m+1) = n*tau(m) or 0 if no such m exists, where tau(k) = A000005(k).

n	a(n)
1	34
2	7
3	19
4	41
5	6641
6	199
7	640063
8	919
9	17299
10	22193
11	350632961
12	5741
13	57394565119
14	2345921
15	3568049
16	18089
17	55171346530303
18	41651
19	193405731995647
20	252881
21	88099649
22	1439024129
23	916791443027132417
24	90271
25	821128751
26	20969598977
27	3959299
28	2319679
29	190190725057515297439745
30	7860401

[34, 7, 19, 41, 6641, 199, 640063, 919, 17299, 22193, 350632961, 5741, 57394565119, 2345921, 3568049, 18089, 55171346530303, 41651, 193405731995647, 252881, 88099649, 1439024129, 916791443027132417, 90271, 821128751, 20969598977, 3959299, 2319679, 190190725057515297439745, 7860401]

cp's OEIS Frontend

A350935 a(n) is the smallest number m such that tau(m-1) = tau(m+1) = n*tau(m) or 0 if no such m exists, where tau(k) = A000005(k).

Table of values

List of values