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A064065
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n-th step is to add a(n) to each previous number a(k) (excluding itself, i.e. k<n) to produce n more terms of the sequence, starting with a(0)=0, a(1)=1.
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3
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0, 1, 1, 1, 2, 1, 2, 2, 2, 3, 3, 3, 1, 2, 2, 2, 3, 2, 3, 3, 3, 4, 3, 2, 3, 3, 3, 4, 3, 4, 2, 3, 3, 3, 4, 3, 4, 4, 3, 4, 4, 4, 5, 4, 5, 5, 5, 3, 4, 4, 4, 5, 4, 5, 5, 5, 6, 3, 4, 4, 4, 5, 4, 5, 5, 5, 6, 6, 1, 2, 2, 2, 3, 2, 3, 3, 3, 4, 4, 4, 2, 3, 3, 3, 4, 3, 4, 4, 4, 5, 5, 5, 3, 2, 3, 3, 3, 4, 3, 4, 4, 4, 5, 5, 5
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,5
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EXAMPLE
| Start with (0,1). So after initial step have (0,*1*,0+1=1), then (0,1,*1*,0+1=1,1+1=2), then (0,1,1,*1*,2,0+1=1,1+1=2,1+1=2), then (0,1,1,1,*2*,1,2,2,0+2=2,1+2=3,1+2=3,1+2=3) etc.
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CROSSREFS
| Each positive number appears an infinite number of times: e.g. a(k)=1 whenever k-1 is in A006894. Cf. A064064, A064066, A064067.
Sequence in context: A068796 A154804 A053276 * A054705 A025800 A029258
Adjacent sequences: A064062 A064063 A064064 * A064066 A064067 A064068
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KEYWORD
| nonn
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Aug 31 2001
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