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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A082906 Sum of terms in n-th row of modified Pascal-triangle displayed in A082905. All C[n,j] binomial coefficients are replaced by C[n/g,j/g], where g=GCD[n,j]; a(n)=Sum{C[n/g,j/g]}, j=0,...,n-1. 1
1, 2, 4, 8, 12, 32, 22, 128, 140, 350, 294, 2048, 1638, 8192, 4890, 15878, 32908, 131072, 81184, 524288, 493582, 1165676, 1393770, 8388608, 5771318, 26910682, 23162026, 89478836, 131854546, 536870912, 352862112, 2147483648, 2147516556 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..32.

EXAMPLE

a(0)=1; a(12)=1+12+6+4,+3+792+2+792+3+4+6+12+1=1638.

MATHEMATICA

Table[Apply[Plus, Table[Binomial[n/GCD[n, j], j/GCD[n, j]], {j, 0, n}]], {n, 0, 32}]

CROSSREFS

Cf. A000005, A007318, A056045.

Sequence in context: A115386 A058771 A036493 * A204088 A187941 A085083

Adjacent sequences:  A082903 A082904 A082905 * A082907 A082908 A082909

KEYWORD

nonn

AUTHOR

Labos Elemer, Apr 23 2003

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 January 22 23:00 EST 2019. Contains 319365 sequences. (Running on oeis4.)