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!)
A332015 Number of compositions (ordered partitions) of n into distinct heptagonal numbers. 2
1, 1, 0, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 2, 6, 0, 0, 0, 0, 0, 0, 0, 1, 2, 0, 0, 0, 0, 0, 2, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 0, 1, 2, 0, 0, 6, 24, 0, 2, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 6, 0, 0, 0, 0, 0, 6, 25, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,9

LINKS

Table of n, a(n) for n=0..82.

Eric Weisstein's World of Mathematics, Heptagonal Number

Index entries for sequences related to compositions

EXAMPLE

a(26) = 6 because we have [18, 7, 1], [18, 1, 7], [7, 18, 1], [7, 1, 18], [1, 18, 7] and [1, 7, 18].

CROSSREFS

Cf. A000566, A279012, A279280, A322799, A331843, A331844, A332007, A332014, A332016.

Sequence in context: A024155 A251570 A292241 * A173667 A241541 A086008

Adjacent sequences:  A332012 A332013 A332014 * A332016 A332017 A332018

KEYWORD

nonn

AUTHOR

Ilya Gutkovskiy, Feb 04 2020

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 July 26 02:06 EDT 2021. Contains 346294 sequences. (Running on oeis4.)