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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A131064 Binomial transform of [1, 1, 5, 5, 5,...]. 8
1, 2, 8, 24, 60, 136, 292, 608, 1244, 2520, 5076, 10192, 20428, 40904, 81860, 163776, 327612, 655288, 1310644, 2621360, 5242796, 10485672, 20971428, 41942944, 83885980, 167772056, 335544212, 671088528, 1342177164, 2684354440 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

COMMENTS

Row sums of triangle A131063. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007

LINKS

Index to sequences with linear recurrences with constant coefficients, signature (4,-5,2)

FORMULA

a(n)=5*2^n-4n-4. G.f.=(1-2x+5x^2)/[(1-2x)(1-x)^2]. - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007

EXAMPLE

a(3) = 24 = sum of row 4 terms of A131063: (1 + 11 + 11 + 1).

a(3) = 24 = (1, 3, 3, 1) dot (1, 1, 5, 5).

MAPLE

a := proc (n) options operator, arrow; 5*2^n-4*n-4 end proc: seq(a(n), n = 0 .. 30); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007

CROSSREFS

Cf. A109128, A131060, A131061, A131062, A131063, A131065, A131066.

Sequence in context: A083553 A051745 A006734 * A075218 A006728 A075216

Adjacent sequences:  A131061 A131062 A131063 * A131065 A131066 A131067

KEYWORD

nonn

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 13 2007

EXTENSIONS

Corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 20 2007

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 03:33 EST 2012. Contains 205694 sequences.