A332951 Numbers m such that A245486(k) = m for some k.

2, 6, 10, 14, 15, 21, 22, 26, 33, 34, 35, 38, 39, 51, 55, 57, 62, 65, 69, 77, 82, 85, 86, 87, 91, 93, 95, 111, 115, 119, 123, 129, 133, 141, 143, 145, 146, 155, 159, 161, 177, 178, 183, 185, 187, 201, 203, 205, 209, 213, 215, 217, 218, 219, 221, 226, 235, 237, 247

Offset

1,1

Comments

Also the union of 2 and squarefree semiprimes which never occur in A332952. See A245486 for more information.

Links

Table of n, a(n) for n=1..59.

Romanian Master in Mathematics Contest, Bucharest, 2020, Problem 6

Example

218 = 2*109 is in the sequence because A245486(262144) = 218.

Crossrefs

Cf. A000040, A006530, A006881, A014664, A245486, A332952.

Sequence in context: A263827 A281974 A080324 * A165562 A302796 A302797

Adjacent sequences: A332948 A332949 A332950 * A332952 A332953 A332954

Keyword

nonn

Author

Jinyuan Wang, Mar 04 2020

Status

approved