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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A129325 Fourth column of PE^2. 14
0, 0, 0, 1, 8, 60, 440, 3290, 25424, 204120, 1705680, 14836470, 134240040, 1262060228, 12313382536, 124509169330, 1303109358880, 14098102762160, 157473907149600, 1813923418494126, 21523529286435000, 262809607270736540 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

COMMENTS

Base matrix is in A011971; second power is in A078937; third power is in A078938; fourth power is in A078939.

LINKS

Table of n, a(n) for n=0..21.

FORMULA

PE=exp(matpascal(5))/exp(1); A = PE^2; a(n)=A[n,4] with exact integer arithmetic: PE=exp(matpascal(5)-matid(6)); A = PE^2; a(n)=A[n,4]

MAPLE

A056857 := proc(n, c) combinat[bell](n-1-c)*binomial(n-1, c) ; end: A078937 := proc(n, c) add( A056857(n, k)*A056857(k+1, c), k=0..n) ; end: A129325 := proc(n) A078937(n+1, 3) ; end: seq(A129325(n), n=0..27) ; # R. J. Mathar, May 30 2008

PROG

(PARI) m=matpascal(30)-matid(31); pe=matid(31)+sum(i=1, 30, m^i/i!); A=pe^2; A[, 4] \\ Herman Jamke (hermanjamke(AT)fastmail.fm), May 01 2008

CROSSREFS

Cf. A056857, A078937, A078938, A078944, A078945, A000110.

Cf. A078937, A078938, A129323, A129324, A129325, A027710.

Cf. A129327, A129328, A129329, A078944, A129331, A129332, A129333.

Sequence in context: A126640 A093132 A094169 * A285391 A001267 A099156

Adjacent sequences:  A129322 A129323 A129324 * A129326 A129327 A129328

KEYWORD

nonn,easy

AUTHOR

Gottfried Helms, Apr 08 2007

EXTENSIONS

More terms from R. J. Mathar and Herman Jamke (hermanjamke(AT)fastmail.fm), May 01 2008

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 September 16 10:36 EDT 2019. Contains 327094 sequences. (Running on oeis4.)