A381528 Indices of records in A381526.

0, 1, 3, 22, 24, 32, 42, 72, 84, 384, 724, 2584, 200000002, 200000004, 2000000002

Offset: 1

Author

Dominic McCarty, Feb 26 2025

Keywords

• nonn

Crossrefs

Cf. A381526.

Programs

Python

from itertools import count
def b(n):
    if n in [0, 2, 4, 8] or n % 10 == 0: return -1
    for k in count(1):
        if str(k) in str(k*n): return k
a, n, max = [], 0, -2
while len(a) < 10:
    if (m := b(n)) > max:
        a.append(n)
        max = m
    n += 1
print(a)