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A095221
(Concatenation 1,2,3,...,n) mod n.
4
0, 0, 0, 2, 0, 0, 5, 6, 0, 0, 4, 0, 4, 4, 0, 12, 15, 0, 16, 0, 3, 4, 6, 12, 0, 16, 0, 8, 3, 0, 18, 28, 15, 16, 25, 0, 14, 10, 33, 20, 27, 24, 27, 4, 0, 36, 35, 12, 29, 0, 48, 4, 14, 0, 15, 4, 18, 28, 3, 0, 28, 60, 45, 60, 55, 48, 13, 52, 0, 50, 14, 36, 12, 72, 0, 20, 4, 72, 74, 60, 54, 24, 65
OFFSET
1,4
LINKS
FORMULA
a(n) = A007908(n) mod n. - Michel Marcus, Nov 21 2022
EXAMPLE
a(4) = 1234 mod 4 = 2.
PROG
(Python)
from itertools import count, islice
def agen():
s = "0"
for n in count(1): s += str(n); yield int(s)%n
print(list(islice(agen(), 83))) # Michael S. Branicky, Nov 21 2022
CROSSREFS
Sequence in context: A358304 A285192 A278177 * A078112 A281190 A275619
KEYWORD
base,nonn,easy
AUTHOR
Amarnath Murthy, Jun 10 2004
EXTENSIONS
More terms from John W. Layman, Jul 29 2005
STATUS
approved