|
Search: id:A125792
|
|
| |
|
| 1, 3, 9, 35, 201, 1827, 27337, 692003, 30251721, 2320518947, 316359580361, 77477180493603, 34394869942983369, 27893897106768940835, 41603705003444309596873, 114788185359199234852802339
(list; graph; listen)
|
|
|
OFFSET
|
0,2
|
|
|
COMMENT
|
Triangle A078121 shifts left one column under matrix square and is related to partitions into powers of 2.
|
|
FORMULA
|
Is this sequence the same as A002575 (coefficients of Bell's formula)?
|
|
PROGRAM
|
(PARI) {a(n)=local(p=2, q=2, A=Mat(1), B); for(m=1, n+1, B=matrix(m, m); for(i=1, m, for(j=1, i, if(j==i|j==1, B[i, j]=1, B[i, j]=(A^q)[i-1, j-1]); )); A=B); return(sum(c=0, n, (A^p)[n+1, c+1]))}
|
|
CROSSREFS
|
Cf. A125790, A078121; A002575; columns: A002577, A125793, A125794, A125795, A125796; diagonals: A125797, A125798.
Sequence in context: A129094 A059424 A002575 this_sequence A057390 A106435 A058540
Adjacent sequences: A125789 A125790 A125791 this_sequence A125793 A125794 A125795
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Paul D. Hanna (pauldhanna(AT)juno.com), Dec 10 2006
|
|
|
Search completed in 0.002 seconds
|
