A347384 Odd numbers k with such a unitary divisor d that A347381(d) > A347381(k).

35, 105, 153, 189, 207, 279, 403, 423, 425, 437, 455, 475, 477, 575, 589, 639, 689, 725, 765, 775, 819, 833, 899, 923, 945, 963, 1025, 1035, 1071, 1127, 1143, 1175, 1209, 1271, 1275, 1311, 1325, 1341, 1365, 1391, 1395, 1421, 1425, 1449, 1475, 1495, 1519, 1651, 1719, 1725, 1739, 1767, 1775, 1791, 1881, 1927, 1953, 1961

Offset

1,1

Links

Table of n, a(n) for n=1..58.

Index entries for sequences computed from indices in prime factorization

Index entries for sequences related to sigma(n)

Example

35 is a product of two primes, 5 and 7, with A347381(7) = 3 > A347381(35) = 2, therefore 35 is included in this sequence.

Prog

(PARI) isA347384(n) = if(!(n%2), 0, my(w=A347381(n)); fordiv(n, d, if(1==gcd(d, n/d) && (A347381(d)>w), return(1))); (0));

Crossrefs

Cf. A347381.

Subsequences: A347390, A347383.

Sequence in context: A063795 A282851 A015882 * A010085 A033852 A241610

Adjacent sequences: A347381 A347382 A347383 * A347385 A347386 A347387

Keyword

nonn

Author

Antti Karttunen, Sep 10 2021

Status

approved