[seqfan] Re: An interesting sequence

[Fred Lunnon]

<< only a(2), a(3), a(6), a(8), a(12) are 0 >>

What about  n = 11  ?!     WFL



On Sun, Apr 16, 2023 at 6:07 AM Yifan Xie <xieyifan4013 at 163.com> wrote:

> Hi,
> a(n) is the smallest positive integer x such that n can be expressed as
> the arithmetic mean of x distinct nonzero squares, or 0 if x does not
> exist. Based on my calculation of a(1) to a(76) by hand, only a(2), a(3),
> a(6), a(8), a(12) are 0 and no terms are larger than 5.
> Please consider this sequence, and if possible, provide a program for me.
>
> Best regards,
> Yifan Xie (xieyifan4013 at 163.com)
>
>
>
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> xieyifan4013 at 163.com
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> Email:xieyifan4013 at 163.com
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