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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A137681 Row sums of triangle A137680. 3
1, 2, 4, 10, 23, 56, 132, 316, 752, 1793, 4272, 10183, 24266, 57833 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Partial sums of A137681 prefaced with a 1 = left border of triangle A137680: (1, 1, 3, 7, 17, 40, 96, 228,...) = A137682. A variation of A137681 = column 2 of triangle A137680: (1, 0, 2, 4, 10, 23, 56, 132, 316,...).

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

a(4) = 10 = sum of row 4 terms of triangle A137680: (7 + 2 + 0 + 1).

CROSSREFS

Cf. A137680, A137682.

Sequence in context: A210460 A191693 A238436 * A127389 A152173 A032171

Adjacent sequences:  A137678 A137679 A137680 * A137682 A137683 A137684

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Feb 05 2008

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 23 15:58 EDT 2019. Contains 325258 sequences. (Running on oeis4.)