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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A038498 Matrix inverse of partition triangle A008284. 24
1, -1, 1, 0, -1, 1, 1, -1, -1, 1, 0, 1, -1, -1, 1, 0, 1, 0, -1, -1, 1, -1, 1, 1, 0, -1, -1, 1, -1, 0, 2, 0, 0, -1, -1, 1, 0, -1, 0, 2, 0, 0, -1, -1, 1, 0, -2, 1, 1, 1, 0, 0, -1, -1, 1, 1, -2, -1, 1, 1, 1, 0, 0, -1, -1, 1, 1, -1, -2, 0, 2, 0, 1, 0, 0, -1, -1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,31

LINKS

Table of n, a(n) for n=1..78.

EXAMPLE

1; -1,1; 0,-1,1; 1,-1,-1,1; ...

PROG

(PARI) tp(n, k) = if (n<1, 0, if (k<1, 0, if (k == n, 1, if (k > n, 0, tp(n-1, k-1) + tp(n-k, k)))));

tabl(nn) = {mtp = matrix(nn, nn, n, k, tp(n, k)); mtpi = mtp^(-1); for (n = 1, nn, for (k = 1, n, print1(mtpi[n, k], ", "); ); print(); ); } \\ Michel Marcus, Mar 04 2014

CROSSREFS

Cf. A038497, A039800-A039810.

Sequence in context: A065716 A079409 A114643 * A319510 A257217 A184154

Adjacent sequences:  A038495 A038496 A038497 * A038499 A038500 A038501

KEYWORD

sign,tabl

AUTHOR

Christian G. Bower, Feb 15 1999

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 17 19:36 EDT 2018. Contains 316293 sequences. (Running on oeis4.)