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 A079783 Sum of n-th row of triangle in A079784. 4

%I

%S 2,9,30,38,285,339,2912,6684,22635,25145,304854,332562,4684589,

%T 5044935,5405280,11531384,208287927,220540149,4423058450,4655850990,

%U 4888643529,5121436067,123147263964,128501492820,669278609675,696049754049,2168462696022,2248776129194

%N Sum of n-th row of triangle in A079784.

%F A079783(n) = n*[A079782(n)-(n-1)/2]. - _R. J. Mathar_, Nov 12 2006

%e The fifth row 55,56,57,58,59 is divisible by 5,4,3,2 and 1 respectively.

%o (PARI) okrow(m, n) = {v = vector(n, i, i+m-1); for (i=1, n, if (v[i] % (n-i+1), return (0));); return (1);}

%o a(n) = {m = n+1; while (! okrow(m, n), m++); sum(k=1, n, m+k-1);} \\ _Michel Marcus_, Feb 28 2014

%Y Cf. A079781, A079782, A079784.

%K nonn

%O 1,1

%A _Amarnath Murthy_, Feb 03 2003

%E More terms from _Michel Marcus_, Feb 28 2014

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Last modified November 30 17:12 EST 2021. Contains 349424 sequences. (Running on oeis4.)