%I #17 Mar 21 2023 09:37:24

%S 2,11,7,14,1,5,1,6,2,8,10,14,13,2,10,6,10,11,15,7,1,5,8,8,0,9,12,15,4,

%T 15,3,12,7,6,2,14,7,1,6,0,15,3,8,11,4,13,10,5,6,10,7,8,4,13,9,0,4,5,1,

%U 9,0,12,15,14,15,3,2,4,14,7,7,3,8,9,2,6,12,15,11,14,5,15,4,11,15,8,13,8

%N Hexadecimal expansion of e.

%F a(n) = 8*A004593(4n)+4*A004593(4n+1)+2*A004593(4n+2)+1*A004593(4n+3).

%e 2.B7E151628AED2A6ABF7158809CF4F3C762E7160F38B4DA56A784D9045190CFEF324E...

%t RealDigits[E~N~200, 16][[1]]

%t RealDigits[E,16,120][[1]] (* _Harvey P. Dale_, Mar 21 2023 *)

%Y Cf. A004593, A001113.

%Y Expansion of e in base b: A004593 (b=2), A004594 (b=3), A004595 (b=4), A004596 (b=5), A004597 (b=6), A004598 (b=7), A004599 (b=8), A004600 (b=9), A001113 (b=10), this sequence (b=16). - _Jason Kimberley_, Dec 05 2012

%K cons,base,easy,nonn

%O 1,1

%A _Andrew J. Robbins_, Jan 03 2010, at the request of _N. J. A. Sloane_