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A364660 Numerators of coefficients in expansion of (1 + x)^(1/4). 2

%I #13 Aug 02 2023 07:07:12

%S 1,1,-3,7,-77,231,-1463,4807,-129789,447051,-3129357,11094993,

%T -159028233,574948227,-4188908511,15359331207,-906200541213,

%U 3358272593907,-25000473754641,93422822977869,-1401342344668035,5271716439465465,-39777496770512145,150462705175415505,-4564035390320936985

%N Numerators of coefficients in expansion of (1 + x)^(1/4).

%e (1 + x)^(1/4) = 1 + x/4 - 3*x^2/32 + 7*x^3/128 - 77*x^4/2048 + 231*x^5/8192 - 1463*x^6/65536 + ...

%e Coefficients are 1, 1/4, -3/32, 7/128, -77/2048, 231/8192, -1463/65536, ...

%t nmax = 24; CoefficientList[Series[(1 + x)^(1/4), {x, 0, nmax}], x] // Numerator

%t Table[Binomial[1/4, n], {n, 0, 24}] // Numerator

%o (PARI) my(x='x+O('x^30)); apply(numerator, Vec((1 + x)^(1/4))) \\ _Michel Marcus_, Aug 02 2023

%Y Denominators are A088802, A123854.

%Y Cf. A002596, A004130, A008545, A067622, A364661.

%K sign,frac

%O 0,3

%A _Ilya Gutkovskiy_, Aug 01 2023

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Last modified September 1 12:26 EDT 2024. Contains 375591 sequences. (Running on oeis4.)