|
Search: id:A156584
|
|
|
| A156584 |
|
A new q-combination type general triangle sequence based on Stirling first polynomials: here q=3: m=2: t(n,k)=If[m == 0, n!, Product[Sum[(-1)^(i + k)*StirlingS1[k - 1, i]*(m + 1)^i, {i, 0, k - 1}], {k, 1, n}]]; b(n,k,m)=If[n == 0, 1, t[n, m]/(t[k, m]*t[n - k, m])]. |
|
+0 2
|
|
| 1, 1, 1, 1, 3, 1, 1, 12, 12, 1, 1, 60, 240, 60, 1, 1, 360, 7200, 7200, 360, 1, 1, 2520, 302400, 1512000, 302400, 2520, 1, 1, 20160, 16934400, 508032000, 508032000, 16934400, 20160, 1, 1, 181440, 1219276800, 256048128000, 1536288768000
(list; table; graph; listen)
|
|
|
OFFSET
|
0,5
|
|
|
COMMENT
|
Row sums are:
{1, 2, 5, 26, 362, 15122, 2121842, 1049973122, 2050823940482,
15854719559212802, 552278629803518956802,...}.
The q=2 sequence is A009963.
I had to adjust the sign to get an all positive set of sequences.
I don't get any of the others in OEIS yet.
|
|
FORMULA
|
q=3: m=2:
t(n,k)=If[m == 0, n!, Product[Sum[(-1)^(i + k)*StirlingS1[k - 1, i]*(m + 1)^i, {i, 0, k - 1}], {k, 1, n}]];
b(n,k,m)=If[n == 0, 1, t[n, m]/(t[k, m]*t[n - k, m])].
|
|
EXAMPLE
|
{1},
{1, 1},
{1, 3, 1},
{1, 12, 12, 1},
{1, 60, 240, 60, 1},
{1, 360, 7200, 7200, 360, 1},
{1, 2520, 302400, 1512000, 302400, 2520, 1},
{1, 20160, 16934400, 508032000, 508032000, 16934400, 20160, 1},
{1, 181440, 1219276800, 256048128000, 1536288768000, 256048128000, 1219276800, 181440, 1},
{1, 1814400, 109734912000, 184354652160000, 7742895390720000, 7742895390720000, 184354652160000, 109734912000, 1814400, 1},
{1, 19958400, 12070840320000, 182511105638400000, 61323731494502400000, 429266120461516800000, 61323731494502400000, 182511105638400000, 12070840320000, 19958400, 1}
|
|
MATHEMATICA
|
Clear[t, n, m, i, k, a, b];
t[n_, m_] = If[m == 0, n!, Product[Sum[(-1)^(i + k)*StirlingS1[k - 1, i]*(m + 1)^i, {i, 0, k - 1}], {k, 1, n}]];
b[n_, k_, m_] = If[n == 0, 1, t[n, m]/(t[k, m]*t[n - k, m])];
Table[Flatten[Table[Table[b[n, k, m], {k, 0, n}], {n, 0, 10}]], {m, 0, 15}]
|
|
CROSSREFS
|
A009963
Sequence in context: A098778 A078122 A128592 this_sequence A129619 A094573 A055154
Adjacent sequences: A156581 A156582 A156583 this_sequence A156585 A156586 A156587
|
|
KEYWORD
|
nonn,tabl,uned
|
|
AUTHOR
|
Roger L. Bagula (rlbagulatftn(AT)yahoo.com), Feb 10 2009
|
|
|
Search completed in 0.005 seconds
|