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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A321916 Tetrangle where T(n,H(u),H(v)) is the coefficient of e(v) in h(u), where u and v are integer partitions of n, H is Heinz number, e is elementary symmetric functions, and h is homogeneous symmetric functions. 0

%I #4 Nov 22 2018 18:17:58

%S 1,-1,1,0,1,1,-2,1,0,-1,1,0,0,1,-1,1,2,-3,1,0,1,0,-2,1,0,0,1,-2,1,0,0,

%T 0,-1,1,0,0,0,0,1,1,-2,-2,3,3,-4,1,0,-1,0,1,2,-3,1,0,0,-1,2,1,-3,1,0,

%U 0,0,1,0,-2,1,0,0,0,0,1,-2,1,0,0,0,0,0,-1,1

%N Tetrangle where T(n,H(u),H(v)) is the coefficient of e(v) in h(u), where u and v are integer partitions of n, H is Heinz number, e is elementary symmetric functions, and h is homogeneous symmetric functions.

%C The Heinz number of an integer partition (y_1, ..., y_k) is prime(y_1) * ... * prime(y_k).

%C Also the coefficient of h(v) in e(u).

%H Wikipedia, <a href="https://en.wikipedia.org/wiki/Symmetric_polynomial">Symmetric polynomial</a>

%e Tetrangle begins (zeroes not shown):

%e (1): 1

%e .

%e (2): -1 1

%e (11): 1

%e .

%e (3): 1 -2 1

%e (21): -1 1

%e (111): 1

%e .

%e (4): -1 1 2 -3 1

%e (22): 1 -2 1

%e (31): 1 -2 1

%e (211): -1 1

%e (1111): 1

%e .

%e (5): 1 -2 -2 3 3 -4 1

%e (41): -1 1 2 -3 1

%e (32): -1 2 1 -3 1

%e (221): 1 -2 1

%e (311): 1 -2 1

%e (2111): -1 1

%e (11111): 1

%e For example, row 14 gives: h(32) = -e(32) + 2e(221) + e(311) - 3e(2111) + e(11111).

%Y This is a regrouping of the triangle A321749. Row sums are A134286.

%Y Cf. A005651, A008480, A056239, A124794, A124795, A215366, A318284, A318360, A319191, A319193, A321912-A321935.

%K sign,tabf

%O 1,7

%A _Gus Wiseman_, Nov 22 2018

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | 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 August 14 07:30 EDT 2024. Contains 375146 sequences. (Running on oeis4.)