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(Q8765)
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instance of
centered polygonal number
series ordinal
8
follows
centered heptagonal number
followed by
centered nonagonal number
0 references
square number
0 references
subclass of
figurate number
0 references
defining formula
C
8
,
n
=
8
2
n
(
n
−
1
)
+
1
=
(
2
n
−
1
)
2
{\displaystyle C_{8,n}={\frac {8}{2}}n(n-1)+1={(2n-1)}^{2}}
criterion used
centered polygonal number
in defining formula
n
≥
1
,
n
∈
N
{\displaystyle n\geq {1},n\in \mathbb {N} }
0 references
Sitelinks
⧼wikibase-sitelinks-mywikigroup⧽
(0 entries)
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