The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A129327 Second column of PE^3. 14
 0, 1, 6, 36, 228, 1545, 11196, 86457, 708504, 6136830, 55976430, 535904259, 5369146272, 56145107577, 611336534802, 6916529431620, 81152874393168, 985767316792449, 12376996566040980, 160399065135692073 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,3 COMMENTS Base matrix is in A011971; second power is in A078937; third power is in A078938; fourth power is in A078939. LINKS FORMULA PE=exp(matpascal(5))/exp(1); A = PE^3; a(n)= A[ n,2 ] with exact integer arithmetic: PE=exp(matpascal(5)-matid(6)); A = PE^3; a(n)=A[ n,2] 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: A078938 := proc(n, c) add( A078937(n, k)*A056857(k+1, c), k=0..n) ; end: A129327 := proc(n) A078938(n+1, 1) ; end: seq(A129327(n), n=0..27) ; # R. J. Mathar, May 30 2008 MATHEMATICA Table[Sum[BellB[n, 3], {i, 0, n}], {n, -1, 18}] (* Zerinvary Lajos, Jul 16 2009 *) 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: A200378 A085687 A242136 * A244889 A144819 A284647 Adjacent sequences:  A129324 A129325 A129326 * A129328 A129329 A129330 KEYWORD nonn,easy AUTHOR Gottfried Helms, Apr 08 2007 EXTENSIONS More terms from R. J. Mathar, May 30 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.

Last modified May 8 12:57 EDT 2021. Contains 343666 sequences. (Running on oeis4.)