A205596 Least k such that A205592(k) = 2^n.

2, 5, 8, 20, 44, 71, 107, 161, 242, 545, 818, 1841, 2762, 6215, 9323, 13985, 20978, 47201, 70802, 159305, 238958, 358910, 807548, 1814615, 2721923, 4082885, 6124328, 13779557, 20669336, 40222412, 87267041

Offset

0,1

Links

Table of n, a(n) for n=0..30.

2011/12 British Mathematical Olympiad Round 2, Problem 2.

Crossrefs

Cf. A205591, A205592, A205593, A205594, A205595.

Sequence in context: A281104 A139407 A107384 * A092446 A087077 A200276

Adjacent sequences: A205593 A205594 A205595 * A205597 A205598 A205599

Keyword

nonn

Author

Joseph Myers, Jan 29 2012

Status

approved