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

Author

Antti Karttunen, Apr 14 2020

Keywords

• nonn

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

Crossrefs

Row 3 of A334100.

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

Cf. A334093 (primes present), A334094.

Programs

PARI

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