login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A282904 Concatenation of the numbers of elements of P{1}, P{1, 2}, P{1, 2, 3}, ..., P{1, 2, 3, ..., n}; where P{A} denote the power set of set A ordered by the size of the subsets, and in each subset, following the increasing order. 1
1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 3, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..87.

EXAMPLE

Rows with power sets of set of numbers from 1 to n (without nonempty sets):

{1};

{1}, {2}, {1, 2};

{1}, {2}, {3}, {1, 2}, {1, 3}, {2, 3}, {1, 2, 3};

...

Rows with the number of elements of these subsets:

1;

1, 1, 2;

1, 1, 1, 2, 2, 2, 3;

...

Concatenation: 1, 1, 1, 2, 1, 1, 1, 2, 2, 2, 3, ...

CROSSREFS

Cf. A193360, A282905, A221914.

Sequence in context: A029408 A029415 A161093 * A299825 A289493 A271325

Adjacent sequences:  A282901 A282902 A282903 * A282905 A282906 A282907

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Feb 24 2017

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 20 15:03 EDT 2018. Contains 316388 sequences. (Running on oeis4.)