A367626 First differences of A036991.

1, 2, 2, 2, 4, 2, 2, 4, 2, 2, 4, 2, 2, 8, 4, 2, 2, 4, 2, 2, 4, 2, 2, 8, 4, 2, 2, 4, 2, 2, 4, 2, 2, 8, 4, 2, 2, 4, 2, 2, 4, 2, 2, 16, 8, 4, 2, 2, 8, 4, 2, 2, 4, 2, 2, 4, 2, 2, 8, 4, 2, 2, 4, 2, 2, 4, 2, 2, 8, 4, 2, 2, 4, 2, 2, 4, 2, 2, 16, 8, 4, 2, 2, 8, 4, 2, 2

Offset

1,2

Comments

Entries are powers of 2 (see A036991 and A367627).

Links

Hugo Pfoertner, Table of n, a(n) for n = 1..10000

Prog

(Python)
from itertools import count, islice
def A367626_gen(): # generator of terms
    a = 0
    yield 1
    for n in count(1):
        s = bin(n)[2:]
        c, l = 2, len(s)
        for i in range(1, l+1):
            if (c:=c+(2 if s[l-i]=='1' else 0)) <= i:
                break
        else:
            yield n-a<<1
            a = n
A367626_list = list(islice(A367626_gen(), 30)) # Chai Wah Wu, Nov 28 2023

Crossrefs

Cf. A036991, A367625, A367627.

Sequence in context: A102445 A102430 A160691 * A049716 A361289 A188903

Adjacent sequences: A367623 A367624 A367625 * A367627 A367628 A367629

Keyword

nonn

Author

N. J. A. Sloane, Nov 25 2023

Status

approved