A242193 - cp's OEIS frontend

A242193 Least prime p such that B_{2*n} == 0 (mod p) but there is no k < n with B_{2k} == 0 (mod p), or 1 if such a prime p does not exist, where B_m denotes the m-th Bernoulli number.

n	a(n)
1	1
2	1
3	1
4	1
5	5
6	691
7	7
8	3617
9	43867
10	283
11	11
12	103
13	13
14	9349
15	1721
16	37
17	17
18	26315271553053477373
19	19
20	137616929
21	1520097643918070802691
22	59
23	23
24	653
25	417202699
26	577
27	39409
28	113161
29	29
30	2003
31	31
32	1226592271
33	839
34	101
35	688531

[1, 1, 1, 1, 5, 691, 7, 3617, 43867, 283, 11, 103, 13, 9349, 1721, 37, 17, 26315271553053477373, 19, 137616929, 1520097643918070802691, 59, 23, 653, 417202699, 577, 39409, 113161, 29, 2003, 31, 1226592271, 839, 101, 688531]

cp's OEIS Frontend

A242193 Least prime p such that B_{2*n} == 0 (mod p) but there is no k < n with B_{2k} == 0 (mod p), or 1 if such a prime p does not exist, where B_m denotes the m-th Bernoulli number.

Table of values

List of values