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 A156924 Fifth right hand column (n-m=4) of the A156920 triangle 9
 1, 83, 2685, 56285, 919615, 12813843, 160206627, 1854550395, 20291056470, 212826091180, 2161547322134, 21414479565774, 208076662576370, 1991164206775450, 18825064380813450 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS FORMULA a(n)=55*a(n-1)-1365*a(n-2)+20251*a(n-3)-200557*a(n-4)+1402203*a(n-5)-7137473*a(n-6)+26886431*a(n-7)-75433971*a(n-8)+157376597*a(n-9)-241846607*a(n-10)+268663713*a(n-11)-208880991*a(n-12)+107416665*a(n-13)-32730075*a(n-14)+4465125*a(n-15) a(n)= (16*n^4-7776*n^3*3^n+256*n^3-104976*n^2*3^n+225000*n^2*5^n+ 1496*n^2- 464616*n*3^n+ 2250000*n*5^n-2016840*n*7^n+3776*n-673596*3^n+5568750*5^n-11092620*7^n+6200145*9^n+3465)/6144 G.f.: GF1(z;RHCnr=5) = (1+28*z-515*z^2+1654*z^3+8689*z^4-65864*z^5+142371*z^6-82242*z^7-99090*z^8+113400*z^9)/((1-9*z)*(1-7*z)^2*(1-5*z)^3*(1-3*z)^4*(1-z)^5) CROSSREFS Other columns A000340, A156922, A156923. Equals A156920 fifth right hand column. Equals A156919 fifth right hand column divided by 16. Equals A142963 fifth right hand column divided by 2^n Sequence in context: A103233 A093283 A332615 * A084299 A017799 A017746 Adjacent sequences:  A156921 A156922 A156923 * A156925 A156926 A156927 KEYWORD easy,nonn AUTHOR Johannes W. Meijer, Feb 20 2009 STATUS approved

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Last modified May 6 15:28 EDT 2021. Contains 343586 sequences. (Running on oeis4.)