A242207 - cp's OEIS frontend

A242207 Least prime divisor of the n-th Domb number D(n) which does not divide any D(k) with k < n, or 1 if such a primitive prime divisor of D(n) does not exist.

n	a(n)
1	2
2	7
3	1
4	97
5	11
6	23
7	19
8	643
9	659
10	1753
11	4922329
12	613
13	341447
14	1193
15	2213
16	2040452101603
17	491
18	82461839
19	733
20	113
21	1108394340978316050481
22	1034497328556150923437
23	593
24	73
25	17117
26	804943
27	422291
28	1559
29	858631
30	337655751557

[2, 7, 1, 97, 11, 23, 19, 643, 659, 1753, 4922329, 613, 341447, 1193, 2213, 2040452101603, 491, 82461839, 733, 113, 1108394340978316050481, 1034497328556150923437, 593, 73, 17117, 804943, 422291, 1559, 858631, 337655751557]

cp's OEIS Frontend

A242207 Least prime divisor of the n-th Domb number D(n) which does not divide any D(k) with k < n, or 1 if such a primitive prime divisor of D(n) does not exist.

Table of values

List of values