login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Powers of 2 grouped in pairs of 2 digits (version 3).
3

%I #14 Aug 09 2017 00:06:27

%S 12,48,16,32,64,12,82,56,51,21,24,20,48,40,96,81,92,16,38,43,27,68,65,

%T 53,61,31,72,26,21,44,52,42,88,10,48,57,62,97,15,24,19,43,48,38,86,81,

%U 67,77,21,63,35,54,43,26,71,88,64,13,42,17,72,82,68,43,54,56,53,68,70

%N Powers of 2 grouped in pairs of 2 digits (version 3).

%C Initial zeros not permitted, i.e., each term must be greater than 9 and less than 100. - _Harvey P. Dale_, Jul 18 2011

%p sq:=[]: for n from 0 to 100 do s:=convert(2^n,base,10): l:=nops(s): sq:=[op(sq),seq(s[l-i],i=0..l-1)] od: i:=1: while(i<150) do j:=0: while(sq[i+j]=0) do j:=j+1 od: printf("%d, ",10*sq[i+j]+sq[i+j+1]): i:=i+j+2 od: # C. Ronaldo

%Y Cf. A030622, A030623.

%K nonn,base,easy

%O 1,1

%A Alexei Kozlowski (bros(AT)spf.minsk.by)

%E More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 03 2005