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Search: id:A078589
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A078589 a(1)=0, a(2)=1, a(n)=abs(abs(a(n-1))-a(n-2)-n+1). +0
1
0, 1, 1, 3, 2, 6, 2, 11, 1, 19, 8, 22, 2, 33, 17, 31, 2, 46, 26, 39, 7, 53, 24, 52, 4, 73, 43, 57, 14, 72, 28, 75, 15, 93, 44, 84, 4, 117, 75, 81, 34, 88, 12, 119, 63, 101, 8, 140, 84, 105, 29, 127, 46, 134, 34, 155, 65, 147, 24, 182, 98, 145, 15, 193, 114, 144, 36, 175 (list; graph; listen)
OFFSET

1,4

COMMENT

It seems that lim n -> infinity M(n)/n = 3.4... where M(n)=Max( a(k) 1<=k<=n). Does a(n)=1 for a finite number of values? First ones are : 2,3,9,177,3891,...

CROSSREFS

Sequence in context: A077066 A065228 A092843 this_sequence A077880 A131969 A058971

Adjacent sequences: A078586 A078587 A078588 this_sequence A078590 A078591 A078592

KEYWORD

nonn

AUTHOR

Benoit Cloitre (benoit7848c(AT)orange.fr), Dec 06 2002

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Last modified September 8 08:06 EDT 2008. Contains 143486 sequences.


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