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A125218
Numbers having at least two representations as 4*x*y-x-y with 1<=x<=y.
4
26, 41, 47, 56, 68, 71, 74, 86, 89, 96, 101, 107, 110, 116, 128, 131, 140, 146, 152, 155, 161, 166, 173, 176, 182, 185, 191, 194, 201, 206, 209, 215, 221, 224, 236, 239, 242, 250
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OFFSET
1,1
COMMENTS
A125203
(a(n)) > 1.
A124934
is the union of this sequence and
A125217
.
LINKS
Reinhard Zumkeller,
Table of n, a(n) for n = 1..10000
PROG
(Haskell)
import Data.List (findIndices)
a125218 n = a125218_list !! (n-1)
a125218_list = map (+ 1) $ findIndices (> 1) a125203_list
--
Reinhard Zumkeller
, Jan 02 2013
CROSSREFS
Sequence in context:
A075288
A320255
A348286
*
A174990
A285513
A138727
Adjacent sequences:
A125215
A125216
A125217
*
A125219
A125220
A125221
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller
, Nov 24 2006
STATUS
approved
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Last modified April 25 05:18 EDT 2024. Contains 371964 sequences. (Running on oeis4.)