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Triangle read by rows in which row n lists n+1 terms, starting with n, such that the difference between successive terms is equal to n^3 - 1.
13

%I #13 May 19 2021 06:12:31

%S 0,1,1,2,9,16,3,29,55,81,4,67,130,193,256,5,129,253,377,501,625,6,221,

%T 436,651,866,1081,1296,7,349,691,1033,1375,1717,2059,2401,8,519,1030,

%U 1541,2052,2563,3074,3585,4096,9,737,1465,2193,2921,3649,4377,5105,5833

%N Triangle read by rows in which row n lists n+1 terms, starting with n, such that the difference between successive terms is equal to n^3 - 1.

%C Note that the last term of the n-th row is the fourth power of n, A000583(n).

%C See also the triangles of A162615 and A162616.

%F Sum_{k=0..n} T(n,k) = n*(n^2-n+1)*(n+1)^2/2 (row sums). - _R. J. Mathar_, Jul 20 2009

%F T(n,k) = n + k*(n^3-1). - _R. J. Mathar_, Oct 20 2009

%e Triangle begins:

%e 0;

%e 1, 1;

%e 2, 9, 16;

%e 3, 29, 55, 81;

%e 4, 67, 130, 193, 256;

%e 5, 129, 253, 377, 501, 625;

%e 6, 221, 436, 651, 866, 1081, 1296;

%e ...

%o From _R. J. Mathar_, Oct 20 2009: (Start)

%o (Python)

%o def A162614(n,k):

%o return n+k*(n**3-1)

%o print([A162614(n,k) for n in range(20) for k in range(n+1)])

%o (End)

%Y Cf. A000583, A068601, A159797, A162609, A162610, A162611, A162612, A162613, A162615, A162616, A162622, A162623, A162624.

%K easy,nonn,tabl

%O 0,4

%A _Omar E. Pol_, Jul 15 2009

%E More terms from _R. J. Mathar_, Oct 20 2009