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A362119
Concatenate the base-6 strings for 1,2,...,n.
2
1, 12, 123, 1234, 12345, 1234510, 123451011, 12345101112, 1234510111213, 123451011121314, 12345101112131415, 1234510111213141520, 123451011121314152021, 12345101112131415202122, 1234510111213141520212223, 123451011121314152021222324, 12345101112131415202122232425
OFFSET
1,2
COMMENTS
The smallest prime occurs at n = 12891. - Michael S. Branicky, Apr 20 2023
The b-file has only 313 terms, since a(314) has 1001 digits.
LINKS
Michael S. Branicky, Table of n, a(n) for n = 1..313
MATHEMATICA
A362119[n_]:=FromDigits[Flatten[IntegerDigits[Range[n], 6]]]; Array[A362119, 20] (* Paolo Xausa, Nov 27 2023 *)
PROG
(Python)
from sympy.ntheory import digits
from itertools import count, islice
def agen(s="", base=6): yield from (int(s:=s+"".join(map(str, digits(n, base)[1:]))) for n in count(1))
print(list(islice(agen(), 20)))
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved