OFFSET
0,2
COMMENTS
For a given n>0, imagine a continuously-running wall clock that chimes once every a(n) minutes. Let m equal the number of distinct minute marks the minute hand would point to over the course of time at each chime. This sequence defines the values of a(n) for m=20. An example of this sequence is depicted in Battlestar Galactica Season 1 Episode 1 "33" (from 2004) with a(5)=33. - David Martin, Nov 26 2019
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
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Dec 07 2014
STATUS
approved