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 60th year, we have over 367,000 sequences, and we’ve reached 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!)
 A145312 Coefficients in expansion of E''_4(q), where E_4 is the Eisenstein series in A004009. 1
 4320, 40320, 210240, 604800, 1814400, 3467520, 7862400, 13080960, 24494400, 35164800, 64753920, 82293120, 135233280, 177811200, 269625600, 320785920, 500346720, 563068800, 838857600, 970905600, 1329229440, 1477681920, 2170022400, 2268144000, 3085992000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Table of n, a(n) for n=0..24. MATHEMATICA terms = 25; E4[x_] = 1 + 240*Sum[k^3*x^k/(1 - x^k), {k, 1, terms+1}]; E4''[x] + O[x]^terms // CoefficientList[#, x]& (* Jean-François Alcover, Feb 27 2018 *) CROSSREFS Cf. A004009, A145346. Sequence in context: A055153 A190011 A338537 * A008409 A320729 A233641 Adjacent sequences: A145309 A145310 A145311 * A145313 A145314 A145315 KEYWORD nonn AUTHOR N. J. A. Sloane, Feb 28 2009 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 8 08:52 EST 2023. Contains 367663 sequences. (Running on oeis4.)