|
| |
|
|
A132611
|
|
Column 0 of triangle A132610.
|
|
4
| |
|
|
1, 1, 2, 14, 194, 4114, 118042, 4274612, 186932958, 9577713250, 562450162646, 37232881004442, 2742420824107648, 222414345991567630, 19691735781407563460, 1889658596054736522248, 195353325211864635176182
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,3
|
|
|
COMMENTS
| Triangle T=A132610 is generated by even matrix powers of itself such that row n+1 of T = row n of T^(2n) with appended '1' for n>=0 with T(0,0)=1.
|
|
|
PROG
| (PARI) {a(n)=local(k=0, A=vector(n+1), p); A[1]=1; for(j=1, n-k-1, p=(n-1)^2-(n-j-1)^2; A=Vec((Polrev(A)+x*O(x^p))/(1-x))); A=Vec((Polrev(A)+x*O(x^p))/(1-x)); A[p+1]}
|
|
|
CROSSREFS
| Cf. A132610 (triangle); other columns: A132612, A132613; A132614.
Sequence in context: A074655 A158102 A067902 * A156327 A047796 A090300
Adjacent sequences: A132608 A132609 A132610 * A132612 A132613 A132614
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Paul D. Hanna (pauldhanna(AT)juno.com), Aug 23 2007
|
| |
|
|
