

A282936


Concatenation of the products 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.


2



1, 1, 2, 2, 1, 3, 3, 1, 2, 4, 2, 4, 8, 8, 1, 5, 5, 1, 2, 3, 6, 2, 3, 6, 6, 12, 18, 6, 12, 18, 36, 36, 1, 7, 7, 1, 2, 4, 8, 2, 4, 8, 8, 16, 32, 8, 16, 32, 64, 64, 1, 3, 9, 3, 9, 27, 27, 1, 2, 5, 10, 2, 5, 10, 10, 20, 50, 10, 20, 50, 100, 100, 1, 11, 11, 1, 2, 3
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OFFSET

1,3


LINKS

Table of n, a(n) for n=1..78.


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 products of elements of these subsets:
1;
1, 2, 2;
1, 3, 3;
1, 2, 4, 2, 4, 8, 8;
...
Concatenation: 1, 1, 2, 2, 1, 3, 3, 1, 2, 4, 2, 4, 8, 8, ...


CROSSREFS

Cf. A282903, A282934, A282935.
Sequence in context: A178568 A104660 A212125 * A220073 A272020 A264263
Adjacent sequences: A282933 A282934 A282935 * A282937 A282938 A282939


KEYWORD

nonn


AUTHOR

Jaroslav Krizek, Feb 25 2017


STATUS

approved



