|
|
A284799
|
|
Write in base k, complement, reverse. Case k = 4.
|
|
2
|
|
|
3, 2, 1, 0, 14, 10, 6, 2, 13, 9, 5, 1, 12, 8, 4, 0, 62, 46, 30, 14, 58, 42, 26, 10, 54, 38, 22, 6, 50, 34, 18, 2, 61, 45, 29, 13, 57, 41, 25, 9, 53, 37, 21, 5, 49, 33, 17, 1, 60, 44, 28, 12, 56, 40, 24, 8, 52, 36, 20, 4, 48, 32, 16, 0, 254, 190, 126, 62, 238, 174
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,1
|
|
LINKS
|
|
|
FORMULA
|
|
|
EXAMPLE
|
a(16) = 62 because 16 in base 4 is 100, its complement in base 4 is 233 and the digit reverse is 332 that is 64 in base 10.
|
|
MAPLE
|
P:=proc(q, h) local a, b, k, n; print(h-1); for n from 1 to q do a:=convert(n, base, h); b:=0;
for k from 1 to nops(a) do a[k]:=h-1-a[k]; b:=h*b+a[k]; od; print(b); od; end: P(10^2, 4);
|
|
MATHEMATICA
|
With[{k = 4}, Array[FromDigits[Reverse[k - IntegerDigits[#, k] - 1], k] &, 70, 0]] (* Michael De Vlieger, Feb 04 2022 *)
|
|
PROG
|
(Python)
from gmpy2 import digits
def A284799(n): return -int((s:=digits(n, 4)[::-1]), 4)-1+4**len(s) # Chai Wah Wu, Feb 04 2022
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|