OFFSET
0,3
LINKS
David A. Corneth, Table of n, a(n) for n = 0..10000 (first 453 terms from Sebastian Karlsson)
EXAMPLE
a(10) = 1020, because 1020 is the first number k such that A348179(k) = 10.
a(1111111110) = -1 (found by Kevin Ryde).
PROG
(Python)
def A348179(n):
s, l = str(n), len(str(n))
return int("".join(s[(i + int(s[i])) % l] for i in range(l)))
terms = {}
for n in range(0, 3000462): # 3000462 to get all terms of the data-section without -1s.
if (k := A348179(n)) not in terms: terms[k] = n
for n in range(0, 52):
try: print(terms[n], end=", ")
except: print(-1, end=", ") # These -1s are conjectured.
CROSSREFS
KEYWORD
base,sign
AUTHOR
Sebastian Karlsson, Nov 17 2021
STATUS
approved