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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A081721 T(n,n), T given in A081720. 2
1, 3, 10, 55, 377, 4291, 60028, 1058058, 21552969, 500280022, 12969598086, 371514016094, 11649073935505, 396857785692525, 14596464294191704, 576460770691256356, 24330595997127372497, 1092955780817066765469, 52063675152021153895330, 2621440000054016000176044 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

CROSSREFS

Sequence in context: A054422 A074503 A034234 * A013009 A203416 A002218

Adjacent sequences:  A081718 A081719 A081720 * A081722 A081723 A081724

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), based on information supplied by Gary W. Adamson, Apr 05 2003

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 13 21:09 EST 2012. Contains 205561 sequences.