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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A119724 Generalized Pascal's triangle made using Mod[(Prime[n] - 1)/2, 4] == 2 primorial-like Stirling polynomials. 1
1, 1, -1, 1, -2, 1, 1, -3, 3, -1, 1, -4, 6, -4, 1, 1, -5, 10, -10, 5, -1, 1, -10, 35, -60, 55, -26, 5, 1, -15, 85, -235, 355, -301, 135, -25, 1, -20, 160, -660, 1530, -2076, 1640, -700, 125, 1, -25, 260, -1460, 4830, -9726, 12020, -8900, 3625, -625, 1, -30, 385, -2760, 12130, -33876, 60650, -69000, 48125, -18750 (list; graph; refs; listen; history; internal format)
OFFSET

0,5

COMMENTS

First row that is not Pascal: {1, -10, 35, -60, 55, -26, 5} Of the four Mod[(Prime[n] - 1)/2, 4] types, this is the least Pascal-like.

FORMULA

a(n) = Flatten[Join[{{1}}, Table[Reverse[CoefficientList[Product[x - p1[n], {n, 0, m}], x]], {m, 0, 10}]]]

MATHEMATICA

a = Join[{{1}}, Table[Reverse[ CoefficientList[Product[x - p1[n], {n, 0, m}], x]], {m, 0, 10}]] aout = Flatten[a]

CROSSREFS

Cf. A007318, A118686.

Sequence in context: A108363 A076831 A197061 * A162424 A008571 A051137

Adjacent sequences:  A119721 A119722 A119723 * A119725 A119726 A119727

KEYWORD

sign,uned,tabf,obsc

AUTHOR

Roger L. Bagula (rlbagulatftn(AT)yahoo.com) Jun 14 2006

EXTENSIONS

Should be edited in the same way that I edited A118686. Unfortunately p1 has not been defined, but must be related to "Mod[(Prime[n] - 1)/2, 4] == 2". Compare the definition of p[n] in A118686. - N. J. A. Sloane (njas(AT)research.att.com), Oct 08 2006

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 06:13 EST 2012. Contains 205991 sequences.