A282935 Concatenation of the sums of elements of P{d_1}, P{d_2}, P{d_3}, ..., P{d_n}; where P{d_n} denote the power set of the set of divisors of n ordered by the size of the subsets, and in each subset, following the increasing order.

1, 1, 2, 3, 1, 3, 4, 1, 2, 4, 3, 5, 6, 7, 1, 5, 6, 1, 2, 3, 6, 3, 4, 7, 5, 8, 9, 6, 9, 10, 11, 12, 1, 7, 8, 1, 2, 4, 8, 3, 5, 9, 6, 10, 12, 7, 11, 13, 14, 15, 1, 3, 9, 4, 10, 12, 13, 1, 2, 5, 10, 3, 6, 11, 7, 12, 15, 8, 13, 16, 17, 18, 1, 11, 12, 1, 2, 3, 4, 6

Offset

1,3

Links

Table of n, a(n) for n=1..80.

Example

Rows with power sets of set of divisors of n (without nonempty sets):
{1};
{1}, {2}, {1, 2};
{1}, {3}, {1, 3};
{1}, {2}, {4}, {1, 2}, {1, 4}, {2, 4}, {1, 2, 4};
...
Rows with the sums of elements of these subsets:
1;
1, 2, 3;
1, 3, 4;
1, 2, 4, 3, 5, 6, 7;
...
Concatenation: 1, 1, 2, 3, 1, 3, 4, 1, 2, 4, 3, 5, 6, 7, ...

Crossrefs

Cf. A282903, A282934, A282936.

Sequence in context: A240677 A030306 A119348 * A354223 A181974 A322589

Adjacent sequences: A282932 A282933 A282934 * A282936 A282937 A282938

Keyword

nonn

Author

Jaroslav Krizek, Feb 25 2017

Status

approved