A053756 - OEIS

A053756

a(n)=a(a(n-3))+a(n-a(n-3)) if n>2 otherwise a(n)=1.

1, 1, 1, 2, 3, 4, 4, 5, 6, 7, 8, 8, 9, 10, 10, 11, 12, 13, 13, 14, 15, 16, 16, 17, 18, 19, 20, 20, 21, 22, 23, 24, 24, 25, 26, 26, 27, 28, 29, 29, 30, 31, 32, 33, 34, 34, 35, 36, 36, 36, 37, 38, 39, 40, 41, 41, 42, 43, 44, 45, 46, 47, 47, 48

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OFFSET

0,4

COMMENTS

a(n)<=n-1; apparently a(n-1)<=a(n)<=a(n-1)+1.

LINKS

Table of n, a(n) for n=0..63.

MAPLE

a := proc(n) option remember; if n<=2 then 1 else a(a(n-3))+a(n-a(n-3)); fi; end;

CROSSREFS

Cf. A004001, A005229.

Sequence in context: A277814 A006162 A036701 * A210436 A003004 A120507

Adjacent sequences: A053753 A053754 A053755 * A053757 A053758 A053759

KEYWORD

easy,nonn

AUTHOR

Henry Bottomley, Apr 05 2000

STATUS

approved