A347314 Fixed points of A347113.

1, 24, 66, 70, 88, 156, 180, 476, 480, 484, 1292, 3182, 3440, 3444, 3604, 5724, 6486, 7470, 8466, 12426

Offset

1,2

Comments

If it exists, a(21) > 400000. - Hugo Pfoertner, Sep 07 2021

a(21) > 3*10^6 if it exists. - Chai Wah Wu, Nov 24 2021

Links

Table of n, a(n) for n=1..20.

Prog

(Python)
from math import gcd
A347314_list, nset, m, c, j, i = [1], {1}, 2, 0, 2, 1
for _ in range(10**4):
    i += 1
    k = m
    while k == j or gcd(k, j) == 1 or k in nset:
        k += 1
    if i == k:
        A347314_list.append(i)
    j = k + 1
    nset.add(k)
    while m in nset:
        m += 1 # Chai Wah Wu, Sep 07 2021

Crossrefs

Cf. A347113.

Sequence in context: A118609 A127878 A205823 * A175153 A250799 A250791

Adjacent sequences: A347311 A347312 A347313 * A347315 A347316 A347317

Keyword

nonn,more

Author

N. J. A. Sloane, Sep 07 2021

Extensions

a(20) from Hugo Pfoertner, Sep 07 2021

Status

approved