A059152 A hierarchical sequence (W'2{2}c - see A059126).

4, 16, 4, 64, 4, 16, 4, 256, 4, 16, 4, 64, 4, 16, 4, 1024, 4, 16, 4, 64, 4, 16, 4, 256, 4, 16, 4, 64, 4, 16, 4, 4096, 4, 16, 4, 64, 4, 16, 4, 256, 4, 16, 4, 64, 4, 16, 4, 1024, 4, 16, 4, 64, 4, 16, 4, 256, 4, 16, 4, 64, 4, 16, 4, 16384, 4, 16, 4, 64, 4, 16, 4, 256, 4, 16, 4, 64, 4, 16

Offset: 0

Author

Jonas Wallgren, Feb 02 2001

Keywords

• easy
• nonn

Links

• J. Wallgren, Hierarchical sequences

Crossrefs

Cf. A007814, A059126.

Formula

a(n) = 4*4^A007814(n). - Mitch Harris, Jun 29 2005