

A146179


Digit sums of Cullen numbers.


1



1, 3, 9, 7, 11, 8, 16, 24, 15, 19, 8, 20, 22, 27, 30, 22, 32, 23, 37, 39, 27, 25, 47, 53, 34, 42, 42, 55, 53, 56, 31, 63, 57, 58, 50, 50, 55, 57, 54, 52, 47, 71, 79, 87, 69, 82, 62, 65, 76, 90, 66, 94, 77, 77, 82, 75, 72, 79, 92, 89, 88, 69, 87, 91, 71, 92, 103, 117, 93, 103
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

1,2


LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000


EXAMPLE

The sum of all the digits of the Cullen number 49153 is 22.


MAPLE

A002064 := proc(n) n*2^n+1; end: A007953 := proc(n) if n < 10 then n; else add ( d, d=convert(n, base, 10) ) ; fi; end: A146179 := proc(n) A007953(A002064(n)) ; end: seq(A146179(n), n=0..80) ; # R. J. Mathar, Jul 08 2009


MATHEMATICA

Table[Total[IntegerDigits[2^n n+1]], {n, 0, 70}] (* Harvey P. Dale, Jun 10 2013 *)


CROSSREFS

Cf. A002064.
Sequence in context: A074806 A010634 A267363 * A294734 A214661 A178414
Adjacent sequences: A146176 A146177 A146178 * A146180 A146181 A146182


KEYWORD

nonn,base


AUTHOR

Parthasarathy Nambi, Oct 27 2008


EXTENSIONS

More terms from R. J. Mathar, Jul 08 2009


STATUS

approved



