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A031309
a(n)=least k such that base 10 representation of n begins at s(k), where s=A031298.
0
1, 2, 3, 4, 5, 6, 7, 8, 9, 29, 11, 1, 15, 17, 19, 21, 23, 25, 27, 49, 14, 33, 2, 37, 39, 41, 43, 45, 47, 69, 16, 36, 55, 3, 59, 61, 63, 65, 67, 89, 18, 38, 58, 77, 4, 81, 83, 85, 87, 109, 20, 40, 60, 80, 99, 5, 103, 105, 107, 129, 22, 42, 62, 82
OFFSET
1,2
CROSSREFS
Sequence in context: A364187 A179979 A256005 * A122621 A229547 A118767
KEYWORD
nonn
STATUS
approved