OFFSET
0,4
COMMENTS
For 0<n<12, a(n)=A000240(n-1).
LINKS
Harvey P. Dale, Table of n, a(n) for n = 0..450
FORMULA
a(0)=0, a(n) = (a(n-1) * n) XOR n, where XOR is the bitwise exclusive-OR operator.
MATHEMATICA
nxt[{n_, a_}]:={n+1, BitXor[a(n+1), n+1]}; NestList[nxt, {0, 0}, 30][[;; , 2]] (* Harvey P. Dale, Mar 14 2023 *)
PROG
(Python)
a=0
for i in range(1, 55):
. print a,
. a *= i
. a ^= i
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Alex Ratushnyak, Apr 27 2012
STATUS
approved