A081778 Maximum element in the continued fraction for n * Sum_{k>=0} 1/2^(2^k).

6, 2, 19, 4, 33, 9, 46, 7, 60, 16, 72, 12, 85, 23, 99, 16, 112, 29, 126, 22, 139, 35, 153, 23, 166, 43, 180, 30, 192, 49, 205, 31, 219, 56, 232, 40, 246, 62, 259, 39, 273, 69, 286, 48, 300, 76, 313, 48, 326, 83, 329, 58, 352, 89, 366, 55, 379, 95, 393, 67, 406, 103, 420, 63

Offset

1,1

Links

Table of n, a(n) for n=1..64.

Formula

a(n)=n for n=2, 4, 12, 16, 48, 80, 108, 112, 123, 144, ....

Crossrefs

Cf. A007400.

Sequence in context: A213771 A266711 A248269 * A055943 A319313 A277275

Adjacent sequences: A081775 A081776 A081777 * A081779 A081780 A081781

Keyword

nonn

Author

Benoit Cloitre, Apr 10 2003

Extensions

a(17) and a(47) onward corrected by Sean A. Irvine, Nov 11 2025

Status

approved