login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 


Triangle, read by rows, where T(0,0) = 1, T(n,k) = 2^n*T(n-1,k) - T(n-1,k-1).
0

%I #13 Jan 25 2020 01:38:35

%S 1,2,-1,8,-6,1,64,-56,14,-1,1024,-960,280,-30,1,32768,-31744,9920,

%T -1240,62,-1,2097152,-2064384,666624,-89280,5208,-126,1,268435456,

%U -266338304,87392256,-12094464,755904,-21336,254,-1,68719476736,-68451041280,22638755840,-3183575040,205605888,-6217920

%N Triangle, read by rows, where T(0,0) = 1, T(n,k) = 2^n*T(n-1,k) - T(n-1,k-1).

%C For n > 0, n-th row sum = Product_{i=1..n} (2^i - 1), i.e., A005329(n).

%C Triangle T(n,k), 0 <= k <= n, read by rows given by [2, 2, 8, 12, 32, 56, 128, 240, 512, ...] DELTA [[ -1, 0, -2, 0, -4, 0, -8, 0, -16, 0, -32, 0, ...] = A014236(first zero omitted)DELTA -A077957 where DELTA is the operator defined in A084938. - _Philippe Deléham_, Aug 23 2006

%e Triangle begins

%e 1;

%e 2, -1;

%e 8, -6, 1;

%e 64, -56, 14, -1;

%e 1024, -960, 280, -30, 1;

%o (PARI) t(n, k) = {if (k < 0, return (0)); if (n < k, return (0)); if (n == 0, return (1)); return (2^n*t(n-1,k) - t(n-1,k-1));} \\ _Michel Marcus_, Apr 11 2013

%K sign,tabl

%O 0,2

%A _Gerald McGarvey_, Jun 05 2005

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified September 23 14:54 EDT 2024. Contains 376178 sequences. (Running on oeis4.)