A334103 Numbers n for which A329697(n) == 3.

19, 21, 23, 27, 29, 31, 33, 35, 37, 38, 39, 42, 45, 46, 53, 54, 55, 58, 61, 62, 65, 66, 70, 73, 74, 75, 76, 78, 83, 84, 89, 90, 92, 101, 103, 106, 108, 110, 113, 116, 119, 122, 123, 124, 125, 130, 132, 140, 146, 148, 150, 152, 153, 156, 166, 168, 178, 180, 184, 187, 202, 205, 206, 212, 216, 220, 221, 226, 232, 238, 241, 244

Offset

1,1

Comments

Numbers n for which A171462(n) = n-A052126(n) is in A334102.

Among the first 2821 terms (terms < 2^31), there are terms with binary weights 2, 3, 4, 5, 6 and 8. For example, 33 is the first term with binary weight 2, and 255 is the first term with binary weight 8.

Links

Antti Karttunen, Table of n, a(n) for n = 1..2821; all terms <= 2^31

Prog

(PARI)
A329697(n) = if(!bitand(n, n-1), 0, 1+A329697(n-(n/vecmax(factor(n)[, 1]))));
isA334103(n) = (3==A329697(n));

Crossrefs

Row 3 of A334100.

Cf. A052126, A171462, A209229, A329697, A334101, A334102, A334104, A334106.

Cf. A334093 (primes present), A334094.

Sequence in context: A156758 A089837 A020347 * A347343 A054864 A158232

Adjacent sequences: A334100 A334101 A334102 * A334104 A334105 A334106

Keyword

nonn

Author

Antti Karttunen, Apr 14 2020

Status

approved