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A078474
a(1)=a(2)=a(3)=1, a(n)=n-a(a(n-1))-a(a(n-2))-a(a(n-3)).
0
1, 1, 1, 1, 2, 3, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 9, 10, 11, 12, 12, 12, 12, 13, 14, 15, 16, 16, 16, 16, 17, 18, 19, 20, 20, 20, 20, 21, 22, 23, 24, 24, 24, 24, 25, 25, 25, 25, 26, 26, 26, 26, 27, 27, 27, 27, 28, 29, 30, 31, 31, 31, 31, 32, 32, 32, 32, 33, 33, 33
OFFSET
1,5
COMMENTS
Conjecture: partial sums of A284680 (verified for n <= 100000). - Sean A. Irvine, Jul 16 2022
CROSSREFS
Sequence in context: A251416 A372079 A087829 * A087177 A180600 A006159
KEYWORD
nonn
AUTHOR
Reinhard Zumkeller, Jan 02 2003
STATUS
approved