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A230765
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Length of chunks of odd digits, delimited by an even digit, in the concatenation of all terms; smallest such sequence without duplicate terms.
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1
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3, 1, 2, 4, 5, 6, 7, 9, 10, 11, 13, 8, 15, 17, 12, 19, 31, 33, 21, 35, 37, 39, 14, 51, 53, 55, 57, 16, 59, 71, 73, 75, 77, 23, 79, 91, 93, 95, 97, 18, 99, 111, 110, 113, 115, 117, 119, 112, 131, 133, 135, 137, 139, 30, 151, 153, 155, 114, 157
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OFFSET
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1,1
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LINKS
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PROG
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(PARI) A230765_vec(n, a=[], s=[], u=0)={my(check(a, s)=my(L=0, j=1); !for(i=1, #s, ( i>L+a[j] || (( i==L+a[j] )== bittest(s[i], 0))) && return; bittest(s[i], 0) && next; L=i; j++)); check(a, s)||return; n-- || return(a); my(t); for(k=1, 9e9, bittest(u, k)&&next; (t=A230765_vec(n, concat(a, k), concat(s, digits(k)), u+2^k))&& return(t))}
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CROSSREFS
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See A230764 for the "even" version.
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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