|
| |
|
|
A111650
|
|
2n appears n times (n>0).
|
|
3
| |
|
|
2, 4, 4, 6, 6, 6, 8, 8, 8, 8, 10, 10, 10, 10, 10, 12, 12, 12, 12, 12, 12, 14, 14, 14, 14, 14, 14, 14, 16, 16, 16, 16, 16, 16, 16, 16, 18, 18, 18, 18, 18, 18, 18, 18, 18, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 24, 24, 24, 24, 24, 24, 24
(list; table; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Seen as a triangle read by rows: T(n,k) = 2*n, 1<=k<=n. [Reinhard Zumkeller, Mar 18 2011]
|
|
|
PROG
| (Haskell)
a111650 n = a111650_list !! (n-1)
a111650_list = concat $ zipWith ($) (map replicate [1..]) [2, 4..]
-- Reinhard Zumkeller, Mar 18 2011
|
|
|
CROSSREFS
| Cf. A000194, A111651, A111652.
Sequence in context: A191682 A113724 A161794 * A156686 A085914 A014684
Adjacent sequences: A111647 A111648 A111649 * A111651 A111652 A111653
|
|
|
KEYWORD
| easy,nonn,tabl
|
|
|
AUTHOR
| Jonathan Vos Post (jvospost3(AT)gmail.com), Aug 12 2005
|
| |
|
|
