A294031 - cp's OEIS frontend

A294031 Numbers k such that k == 1 (mod 12) and 6k+1, 12k+1, 18k+1, 36k+1, 72k+1, 108k+1 and 144k+1 are all primes, so N = (6k+1)(12k+1)(18k+1), (36k+1)N, (72k+1)N, (108k+1)N and (144k+1)N are 5 Carmichael numbers in an arithmetic progression.

n	a(n)
1	20543425
2	80993605
3	112608685
4	255063865
5	307510105
6	367621765
7	382017685
8	400463665
9	409631425
10	430786405
11	536835565
12	675787105
13	950572525
14	1040986765
15	1139137825
16	1214553025
17	1404069205
18	1456119805
19	1560636805
20	1608308905
21	1796972905
22	1805035225
23	1823195605

[20543425, 80993605, 112608685, 255063865, 307510105, 367621765, 382017685, 400463665, 409631425, 430786405, 536835565, 675787105, 950572525, 1040986765, 1139137825, 1214553025, 1404069205, 1456119805, 1560636805, 1608308905, 1796972905, 1805035225, 1823195605]

cp's OEIS Frontend

A294031 Numbers k such that k == 1 (mod 12) and 6k+1, 12k+1, 18k+1, 36k+1, 72k+1, 108k+1 and 144k+1 are all primes, so N = (6k+1)(12k+1)(18k+1), (36k+1)N, (72k+1)N, (108k+1)N and (144k+1)N are 5 Carmichael numbers in an arithmetic progression.

Table of values

List of values

cp's OEIS Frontend

A294031 Numbers k such that k == 1 (mod 12) and 6*k+1, 12*k+1, 18*k+1, 36*k+1, 72*k+1, 108*k+1 and 144*k+1 are all primes, so N = (6*k+1)*(12*k+1)*(18*k+1), (36*k+1)*N, (72*k+1)*N, (108*k+1)*N and (144*k+1)*N are 5 Carmichael numbers in an arithmetic progression.

Table of values

List of values

A294031 Numbers k such that k == 1 (mod 12) and 6k+1, 12k+1, 18k+1, 36k+1, 72k+1, 108k+1 and 144k+1 are all primes, so N = (6k+1)(12k+1)(18k+1), (36k+1)N, (72k+1)N, (108k+1)N and (144k+1)N are 5 Carmichael numbers in an arithmetic progression.