[seqfan] Re: Table in arXiv 2007.03957
michel.marcus at free.fr
michel.marcus at free.fr
Fri Jul 10 09:00:51 CEST 2020
For N>=3, I wrote this script:
lista3(nn, N) = {
a = eulerphi(N)/2 + omega(N);
b = omega(N) - 1;
gf = 1/(1-a*t+b*t^2) + O(t^nn);
lgf = log(gf);
vector(nn-1, k, sumdiv(k, d, moebius(d)*polcoef(lgf,k/d)/d));
}
So for N=7, I get 3, 2, 5, 10, 24, ... that is A032170 except for 1st term
----- Mail original -----
De: "Neil Sloane" <njasloane at gmail.com>
À: "Sequence Fanatics Discussion list" <seqfan at list.seqfan.eu>
Envoyé: Jeudi 9 Juillet 2020 18:33:12
Objet: [seqfan] Re: Table in arXiv 2007.03957
In my professional opinion those 5 sequences are:
0,1,1,0,1,0,1,1,1,1,2,2,3,3,4,5 = A113788
1,1,1,1,2,2,4,5,8,11,18,25,40,58,90,135 = A006206
2,1,2,3,6,9,18,30,56,99,186,335,630,1161,2182,4080 = A001037
3,3,8,18,48,116,312,810,2184,5880 = A027376
3,2,5,10,24,50,120,270,640,1500,3600,8610 = A072337
Best regards
Neil
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