A084186 First occurrence of exactly n 1's in the binary expansion of sqrt(2).

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

Offset

1,2

Links

Table of n, a(n) for n=1..20.

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

Cf. A084185, A084187.

Cf. A233836.

Sequence in context: A319955 A317484 A196159 * A037104 A100306 A101014

Adjacent sequences: A084183 A084184 A084185 * A084187 A084188 A084189

Keyword

base,nonn,more,hard

Author

Ralf Stephan, May 18 2003

Status

approved