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%I #13 Aug 06 2021 04:53:37
%S 1,4,6,10,14,22,26,38,46,58,66,86,94,118,130,146,162,194,206,242,258,
%T 282,302,346,362,402,426,462,486,542,558,618,650,690,722,770,794,866,
%U 902,950,982,1062,1086,1170,1210,1258,1302,1394,1426,1510,1550,1614,1662
%N a(n) = T(n,n), array T as in A049627.
%F a(n) = 2*A005728(n) if n>=1. - _R. J. Mathar_, Feb 05 2008
%o (PARI) T(n,k) = (n+1)*(k+1) - sum(i=0, n, sum(j=0, k, gcd(i,j)>1)); \\ A049627
%o a(n) = T(n, n); \\ _Michel Marcus_, Aug 06 2021
%Y Cf. A049627, A049643, A005728.
%K nonn
%O 0,2
%A _Clark Kimberling_
%E More terms from _Sean A. Irvine_, Aug 05 2021
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