The OEIS is supported by the many generous donors to the OEIS Foundation.

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 60, we have over 367,000 sequences, and we’ve crossed 11,000 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A088893 Polynexus numbers of order 15. 6
 0, 1, 437, 32338, 898774, 13420861, 130567049, 929084572, 5210829060, 24240197433, 96985597357, 342789175982, 1092151142842, 3186269918917, 8618003504977, 21826239750488, 52182586901800 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 LINKS Bruno Berselli, Table of n, a(n) for n = 1..1000 X. Acloque, Polynexus Numbers and other mathematical wonders [broken link] Index entries for linear recurrences with constant coefficients, signature (15,-105,455,-1365,3003,-5005,6435,-6435,5005,-3003,1365,-455,105,-15,1). FORMULA a(n) = ((n^15-(n-1)^15)-(n^3-(n-1)^3))/32760 = ((n^15-(n-1)^15)-(n^3-(n-1)^3))/(2^15-2^3). G.f.: x^2*(1+422*x+25888*x^2+459134*x^3+3137271*x^4+9505116*x^5+13661136*x^6+9505116*x^7+3137271*x^8+459134*x^9+25888*x^10+422*x^11+x^12)/(1-x)^15. - Bruno Berselli, Feb 08 2012 MATHEMATICA Table[((n^15 - (n - 1)^15) - (n^3 - (n - 1)^3))/32760, {n, 20}] (* Bruno Berselli, Feb 08 2012 *) CROSSREFS Cf. A079547, A083200, A088889, A088890, A088891, A088892, A088894. Sequence in context: A190828 A084293 A237939 * A043447 A006911 A222877 Adjacent sequences: A088890 A088891 A088892 * A088894 A088895 A088896 KEYWORD nonn,easy AUTHOR Xavier Acloque, Oct 21 2003 EXTENSIONS First term added according to the formula from Bruno Berselli, Feb 08 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 2 07:49 EST 2023. Contains 367510 sequences. (Running on oeis4.)