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

 

Logo

Annual appeal: Please make a donation to keep the OEIS running! Over 6000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A050357 Number of ordered factorizations with 2 levels of parentheses indexed by prime signatures. 2
1, 1, 4, 7, 16, 40, 64, 208, 73, 256, 292, 1024, 544, 1024, 1840, 4864, 3472, 4096, 10624, 4936, 22528, 1015, 13552, 20224, 16384, 57856, 36976, 102400, 9328, 89344, 110848, 65536, 302080, 246784, 458752, 70480, 546304, 52996, 581632 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..39.

CROSSREFS

A050356(A025487).

Sequence in context: A027609 A145763 A144916 * A132334 A289521 A097661

Adjacent sequences:  A050354 A050355 A050356 * A050358 A050359 A050360

KEYWORD

nonn

AUTHOR

Christian G. Bower, Oct 15 1999

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 December 11 19:09 EST 2017. Contains 295919 sequences.