

A084186


First occurrence of exactly n 1's in the binary expansion of sqrt(2).


4



1, 3, 40, 17, 74, 265, 31, 336, 11937, 1403, 8894, 3524, 33223, 126903, 3067, 109312, 390536, 553171, 280266, 962560
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OFFSET

1,2


LINKS



EXAMPLE

The binary expansion of sqrt(2) is 1.0110101000001..(A004539) and at position 17, there are four 1's, framed by 0's, so a(4)=17.


CROSSREFS



KEYWORD

base,nonn,more,hard


AUTHOR



STATUS

approved



