editing
approved
editing
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9(n+1)(2n+1)(2n+3)A003301(n+1)/a(n+1)-2(2n+1)(10n^2+10n+3)A003301(n)/a(n)+4n^3A003301(n-1)/a(n-1) = 0 . - R. J. Mathar, Dec 08 2005
Dnminus1 := 1 : print(denom(Dnminus1)) ; Dn := 2/9 : print(denom(Dn)) ; for nplus1 from 2 to 20 do n := nplus1-1 : Dnplus1 := (2*(2*n+1)*(10*n^2+10*n+3)*Dn-4*n^3*Dnminus1)/(9*nplus1*(2*n+1)*(2*n+3)) : print(denom(Dnplus1)) ; Dnminus1 := Dn : Dn := Dnplus1 : od : (# _R. J. Mathar)_
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editing
_N. J. A. Sloane (njas(AT)research.att.com)_.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
nonn,easy,frac,new
nonn,easy,frac,new
N. J. A. Sloane (njas(AT)research.att.com).
1, 9, 81, 8505, 229635, 413343, 531972441, 227988189, 3419822835, 29824274944035, 375785864294841, 307461161695779, 1116569481947829, 660923243352964935, 849758455739526345, 6875395665388507657395
Dnminus1 := 1 : print(denom(Dnminus1)) ; Dn := 2/9 : print(denom(Dn)) ; for nplus1 from 2 to 20 do n := nplus1-1 : Dnplus1 := (2*(2*n+1)*(10*n^2+10*n+3)*Dn-4*n^3*Dnminus1)/(9*nplus1*(2*n+1)*(2*n+3)) : print(denom(Dnplus1)) ; Dnminus1 := Dn : Dn := Dnplus1 : od : (Mathar)
nonn,easy,more,frac,new
More terms from Richard J. Mathar (mathar(AT)strw.leidenuniv.nl), Dec 08 2005
G . S . Joyce, The simple cubic lattice Green function, Phil. Trans. Roy. Soc., 273 (1972), 583-610.
nonn,easy,more,frac,new
Coefficients Denominators of coefficients of Green function for cubic lattice.
PTRS G S Joyce, The simple cubic lattice Green function, Phil. Trans. Roy. Soc., 273 593 73(1972), 583-610.
Cf. A003301.
,newnonn,easy,more,frac