login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A180379 Number of increasing sequences of n integers x(1),...,x(n) with values in 1..2*n such that x(j) divides x(k) iff j divides k 1
2, 4, 8, 11, 19, 12, 22, 22, 10, 5, 13, 12, 21, 12, 11, 12, 24, 29, 60, 83, 56, 29, 61, 83, 56, 29, 29, 29, 62, 83, 171, 253, 164, 83, 83, 83, 146, 83, 83, 83, 173, 245, 497, 731, 488, 245, 497, 731, 731, 731, 731, 731, 1471, 2189, 2189, 2189, 1460, 731, 1473, 2189, 3659 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A180378

LINKS

R. H. Hardin, Table of n, a(n) for n=1..99

CROSSREFS

Sequence in context: A120632 A007295 A053439 * A033956 A282620 A320440

Adjacent sequences:  A180376 A180377 A180378 * A180380 A180381 A180382

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 01 2010

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 7 01:03 EDT 2020. Contains 333291 sequences. (Running on oeis4.)