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 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A103918 Column k=4 sequence (without zero entries) of table A060524. 0
 1, 55, 4214, 463490, 70548511, 14302100449, 3737959987644, 1226167891984980, 493798190899900941, 239688442525550848731, 138076392637292961502674, 93162656724001697704101750, 72792816042947595318479356875 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS a(n) = sum over all M2(2*n+4,k), k from {1..p(2*n+4)} restricted to partitions with exactly four odd and any nonnegative number of even parts. p(2*n+4)= A000041(2*n+4) (partition numbers) and for the M2-multinomial numbers in A-St order see A036039(2*n+4,k). - Wolfdieter Lang, Aug 07 2007 LINKS FORMULA E.g.f. (with alternating zeros): A(x) = (d^4/dx^4)a(x) with a(x):=(1/(sqrt(1-x^2))*(log(sqrt((1+x)/(1-x))))^4)/4!. EXAMPLE Multinomial representation for a(2): partitions of 2*2+4=8 with four odd parts: (1^3,5) with A-St position k=11; (1^2,3^2) with k=13; (1^4,4) with k=16; (1^3,2,3) with k=17 and (1^4,2^2) with k=20. The M2 numbers for these partitions are 1344, 1120, 420, 1120, 210 adding up to 4214 = a(2). CROSSREFS Sequence in context: A035323 A250833 A206097 * A013537 A056567 A119081 Adjacent sequences: A103915 A103916 A103917 * A103919 A103920 A103921 KEYWORD nonn,easy AUTHOR Wolfdieter Lang, Feb 24 2005 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 November 27 14:32 EST 2022. Contains 358405 sequences. (Running on oeis4.)