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A247945
Lexicographically earliest permutation of the positive integers such that a(n) contains the a(n)-th digit of the sequence, for all n.
0
1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 17, 19, 21, 22, 25, 27, 29, 31, 23, 33, 37, 39, 41, 24, 44, 47, 49, 51, 53, 45, 55, 59, 61, 26, 46, 66, 69, 71, 73, 75, 67, 77, 81, 28, 48, 68, 88, 91, 93, 95, 97, 89, 10, 20, 40, 60, 80, 111, 14, 16, 18, 12, 112, 42, 62, 82, 113, 34, 36, 38, 30, 114, 116
OFFSET
1,2
LINKS
M. F. Hasler in reply to E. Angelini, The a(n)th digit of the sequence is visible in a(n), SeqFan list, Sep 27 2014
EXAMPLE
See the link.
a(10) cannot be 10 because in that case, the 11th digit would be "0" which does not occur in the number "11", so this number could appear nowhere else in the sequence.
PROG
(PARI) a(n, print_all=0, d=[], u=0, L)={for(n=1, n, for(k=1, 9e9, bittest(u, k)&&next;
for(j=1, #dk=digits(k), setsearch(Set(digits(#d+j)), dk[j])||next(2));
d=concat(d, digits(k)); u+=1<<L=k; print_all&&print1(k", "); break)); L} \\ M. F. Hasler, Sep 27 2014
CROSSREFS
Sequence in context: A061383 A059708 A306520 * A317621 A298297 A331009
KEYWORD
nonn,base
AUTHOR
Eric Angelini and M. F. Hasler, Sep 27 2014
STATUS
approved