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A050129
a(n) is the least k satisfying A050128(k) = n.
2
1, 3, 9, 2, 6, 15, 8, 4, 20, 5, 12, 27, 14, 7, 32, 17, 37, 19, 40, 10, 22, 11, 24, 51, 26, 13, 56, 29, 61, 31, 64, 16, 34, 71, 36, 18, 76, 39, 81, 163, 42, 21, 44, 91, 46, 23, 48, 99, 50, 25, 104, 53, 109, 55, 112, 28, 58, 119, 60, 30, 124, 63
OFFSET
1,2
COMMENTS
Conjecture: for n > 1, a(n) is always one of n/2, n+1, 2*n+2, 2*n+3, 4*n+3 or 4*n+5. - Robert Israel, Feb 18 2020
LINKS
MAPLE
N:= 100: # to get a(1)..a(N)
A[1]:= 1: S:= {0, 1}: count:= 1:
v:= 1:
for n from 2 while count < N do
v:= floor(v/2);
if member(v, S) then v:= 2*n fi;
if v <= N then count:= count+1; A[v]:= n fi;
S:= S union {v};
od:
seq(A[i], i=1..N); # Robert Israel, Feb 09 2020
CROSSREFS
Cf. A050128.
Sequence in context: A076420 A091473 A019675 * A070343 A050104 A175993
KEYWORD
nonn
EXTENSIONS
Name changed by Robert Israel, Feb 09 2020
STATUS
approved