A357123 Number of sets S of size A066063(n) such that {1, 2, ..., n} is a subset of S + S.

1, 1, 2, 2, 5, 5, 2, 1, 11, 8, 1, 1, 26, 16, 2, 1, 65, 39, 7, 5, 284, 183, 52, 31, 8, 3, 422, 243, 58, 31, 4, 2, 893, 475, 144, 79, 21, 11, 1, 1, 428, 233, 54, 29, 3, 2, 2034, 1180, 371, 213

Offset

1,3

Comments

A066063(n) is the size of the smallest set S such that S+S contains {1,2,...,n}.

Links

Table of n, a(n) for n=1..50.

William Chang, Python script

Example

For n=3 we can generate {1, 2, 3} with S = {0, 1, 2} and S = {0, 1, 3}.

Crossrefs

Cf. A066063.

Sequence in context: A210713 A283825 A005177 * A253600 A373203 A045537

Adjacent sequences: A357120 A357121 A357122 * A357124 A357125 A357126

Keyword

nonn,more

Author

William Chang, Sep 12 2022

Extensions

a(31)-a(50) from Giovanni Resta, Oct 15 2022

Status

approved