OFFSET
0,4
COMMENTS
a(n) = 0 for n = 0, 1, 2, 4, 5, 359, 841, 5129, 5180, 5292, 22255, 50109, 85763 (a(n) < 10^6).
a(n) merges with a similar sequence with an odd initial condition (e.g., a(0) = 1) at term a(250).
LINKS
Andrew Nelson, Table of n, a(n) for n = 0..10000
EXAMPLE
a(2) = concatenate(1, a(1)) mod 2 = concatenate(1, 0) mod 2 = 10 mod 2 = 0.
a(20) = concatenate(19, a(19)) mod 20 = concatenate(19, 15) mod 20 = 1915 mod 20 = 15.
PROG
(PARI) lista(nn) = {my(a = 0, list = List()); listput(list, a); for (n=1, nn, a = eval(concat(Str(n-1), a)) % n; listput(list, a); ); Vec(list); } \\ Michel Marcus, Mar 17 2020
CROSSREFS
KEYWORD
AUTHOR
Andrew Nelson, Mar 13 2020
STATUS
approved