1,1

a(n) is also A154808 written in base 2.

n ... a(n) ........................ A154808(n)

1 ... 11111 ....................... 31

2 ... 1111100000 .................. 992

3 ... 111110000011111 ............. 31775

4 ... 11111000001111100000 ........ 1016800

5 ... 1111100000111110000011111 ... 32537631

Cf. A152775, A153435, 154805, A154808.

Sequence in context: A038447 A115834 A115810 this_sequence A076164 A073038 A107650

Adjacent sequences: A154804 A154805 A154806 this_sequence A154808 A154809 A154810

easy,nonn

Omar E. Pol (info(AT)polprimos.com), Jan 25 2009