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A025507
Least k such that the first k terms of A006928 contain n more 2's than 1's.
3
11, 92, 377, 470, 6351, 6968, 7175, 7268, 7565, 7970, 20337, 20370, 21981, 22008, 25637, 25664, 25691, 27968, 39183, 39210, 42397, 43128, 43149, 48636, 48729, 48756, 49013, 49040, 49067, 49094, 49863, 50080, 50089, 50386, 50413, 50958, 51343, 52242
OFFSET
1,1
COMMENTS
a(n)=i => i is the smallest index such that A088568(i)=-n. - Paolo Bonzini, Jul 06 2016.
LINKS
CROSSREFS
KEYWORD
nonn
STATUS
approved