OFFSET
1,1
COMMENTS
The prime 313 appears 10 times. Which numbers are allowed as bases?
LINKS
Michael De Vlieger and Michel Marcus, Table of n, a(n) for n = 1..100 (first 75 terms from Michel Marcus).
EXAMPLE
From Michael De Vlieger, Sep 08 2017: (Start)
Bases that appear, for numbers 2 <= m <= 101000 in A158235, i.e., for 1 <= n <= 100. f = frequency of b in a(n) for m in the range shown above:
Base b f Prime factors of b
------------------------------
3 1 3
7 2 7
18 1 2, 3, 3
22 2 2, 11
30 1 2, 3, 5
41 1 41
68 2 2, 2, 17
99 1 3, 3, 11
146 1 2, 73
239 2 239
292 1 2, 2, 73
313 10 313
423 2 3, 3, 47
439 1 439
499 4 499
521 1 521
581 1 7, 83
653 9 653
699 2 3, 233
710 6 2, 5, 71
787 1 787
1047 1 3, 349
1353 1 3, 11, 41
1425 1 3, 5, 5, 19
1660 1 2, 2, 5, 83
1714 1 2, 857
2060 1 2, 2, 5, 103
2174 1 2, 1087
2198 1 2, 7, 157
2272 5 2, 2, 2, 2, 2, 71
2819 4 2819
3019 1 3019
4366 13 2, 37, 59
4526 2 2, 31, 73
4611 6 3, 29, 53
4701 8 3, 1567
6205 1 5, 17, 73
(End)
MATHEMATICA
See A158235.
CROSSREFS
KEYWORD
nonn
AUTHOR
T. D. Noe, Mar 14 2009
STATUS
approved