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A251535 Bisection A098548(2n+1). 4
1, 3, 9, 21, 27, 33, 39, 51, 57, 63, 69, 81, 87, 93, 99, 111, 117, 123, 129, 141, 147, 153, 159, 171, 177, 183, 189, 201, 207, 213, 219, 237, 243, 249, 261, 267, 273, 279, 291, 297, 303, 309, 321, 327, 333, 339, 351, 357, 363 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 0..100000

PROG

(Haskell)

a251535 n = a251535_list !! n

a251535_list = fst a098548_bisect

a098548_bisect = cleave a098548_list where

   cleave xs = (evens xs, odds xs) where

      evens [] = []; evens [x] = [x]; evens (x:_:xs) = x : evens xs

      odds [] = []; odds [x] = []; odds (_:x:xs) = x : odds xs

-- Reinhard Zumkeller, Dec 08 2014

CROSSREFS

Cf. A098548, A251536.

Sequence in context: A032640 A245202 A127174 * A191177 A275450 A244972

Adjacent sequences:  A251532 A251533 A251534 * A251536 A251537 A251538

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 07 2014

STATUS

approved

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Last modified April 18 22:08 EDT 2019. Contains 322237 sequences. (Running on oeis4.)