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 A001795 Coefficients of Legendre polynomials. (Formerly M4407 N1861) 6

%I M4407 N1861

%S 1,1,7,33,715,4199,52003,334305,17678835,119409675,1641030105,

%T 11435320455,322476036831,2295919134019,32968493968795,

%U 238436656380769,27767032438524099,203236010537432691,2989949596465113373

%N Coefficients of Legendre polynomials.

%C Numerators in expansion of sqrt(c(x)), c(x) the g.f. of A000108. - _Paul Barry_, Jul 12 2005

%C Coefficient of Legendre_0(x) when x^n is written in term of Legendre polynomials. - _Michel Marcus_, May 28 2013

%D N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

%H T. D. Noe, <a href="/A001795/b001795.txt">Table of n, a(n) for n=0..100</a>

%H H. E. Salzer, <a href="http://dx.doi.org/10.1090/S0025-5718-1948-0023123-5">Coefficients for expressing the first twenty-four powers in terms of the Legendre polynomials</a>, Math. Comp., 3 (1948), 16-18.

%F 1/(sqrt(1-x)+sqrt(1+x)) = sum(n=0, inf, (a(n)/b(n))*x^(2n)) where b(n) is a power of 2. - _Benoit Cloitre_, Mar 12 2002

%F For n>=1, 2^(n+1)*a(2^(n-1))=A001791(2^n). [_Vladimir Shevelev_, Sep 05 2010]

%Y Divisor of A048990 and A065097. Apparently a bisection of A002596.

%Y Bisection of A099024.

%Y Cf. A000108, A001791.

%K nonn

%O 0,3

%A _N. J. A. Sloane_.

%E More terms from _Benoit Cloitre_, Mar 12 2002

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Last modified January 23 04:28 EST 2019. Contains 319370 sequences. (Running on oeis4.)