login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A002751 Sum of logarithmic numbers.
(Formerly M2821 N1135)
0
1, 3, 9, 37, 153, 951, 5473, 42729, 353937, 3455083, 30071001, 426685293, 4707929449, 59350096287, 882391484913, 15177204356401, 205119866263713, 4040196156574419, 64262949875511337, 1408785031894483893, 29514546353782633401, 593055713389216814983 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

J. M. Gandhi, On logarithmic numbers, Math. Student, 31 (1963), 73-83.

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

LINKS

Index entries for sequences related to logarithmic numbers

FORMULA

E.g.f.: F(x)/x*exp(x) where F(x) is o.g.f. for A000005(). - Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 09 2003

MAPLE

[seq(numtheory[tau](n), n=0..40)] ; gfun[listtoseries](%, x, 'ogf') ; %/x*exp(x) ; taylor(%, x=0, 40) ; eg := gfun[seriestolist](%, 'ogf') ; seq( op(i, eg)*(i-1)!, i=1..nops(eg)) ; # R. J. Mathar, Jul 08 2011

CROSSREFS

Sequence in context: A149021 A149022 A134818 * A119856 A077365 A006229

Adjacent sequences:  A002748 A002749 A002750 * A002752 A002753 A002754

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

More terms from J. O. Shallit.

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 15:20 EST 2012. Contains 205823 sequences.