login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A273729
Number of n-ary heaps on n levels (i.e., of
A023037
(n) elements).
2
1, 1, 2, 7484400
(
list
;
graph
;
refs
;
listen
;
history
;
text
;
internal format
)
OFFSET
0,3
COMMENTS
a(5), a(6), a(7) have 1774, 31436, 625065 decimal digits, respectively.
LINKS
Alois P. Heinz,
Table of n, a(n) for n = 0..4
Wikipedia,
D-ary heap
FORMULA
a(n) =
A273712
(n,n).
CROSSREFS
Main diagonal of
A273712
.
Cf.
A023037
.
Sequence in context:
A352126
A157991
A233555
*
A324440
A121390
A170997
Adjacent sequences:
A273726
A273727
A273728
*
A273730
A273731
A273732
KEYWORD
nonn
AUTHOR
Alois P. Heinz
, May 28 2016
STATUS
approved
Lookup
|
Welcome
|
Wiki
|
Register
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Style Sheet
|
Transforms
|
Superseeker
|
Recents
The OEIS Community
| Maintained by
The OEIS Foundation Inc.
License Agreements, Terms of Use, Privacy Policy.
.
Last modified September 11 12:31 EDT 2024. Contains 375829 sequences. (Running on oeis4.)