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A162624 Triangle read by rows in which row n lists n terms, starting with n^4 + n - 1, such that the difference between successive terms is equal to n^4 - 1 = A123865(n). 6

%I #12 Apr 28 2022 17:02:34

%S 1,17,32,83,163,243,259,514,769,1024,629,1253,1877,2501,3125,1301,

%T 2596,3891,5186,6481,7776,2407,4807,7207,9607,12007,14407,16807,4103,

%U 8198,12293,16388,20483,24578,28673,32768,6569,13129,19689,26249,32809

%N Triangle read by rows in which row n lists n terms, starting with n^4 + n - 1, such that the difference between successive terms is equal to n^4 - 1 = A123865(n).

%C Note that the last term of the n-th row is the 5th power of n, A000584(n).

%C See also the triangles of A162622 and A162623.

%H Nathaniel Johnston, <a href="/A162624/b162624.txt">Table of n, a(n) for n = 1..10000</a>

%F Row sums: n*(n^5 + n^4 + n - 1)/2. - _R. J. Mathar_, Jul 20 2009

%e Triangle begins:

%e 1;

%e 17, 32;

%e 83, 163, 243;

%e 259, 514, 769, 1024;

%e 629, 1253, 1877, 2501, 3125;

%e 1301, 2596, 3891, 5186, 6481, 7776;

%e ...

%p A162624 := proc(n,k) return n+k*(n^4-1): end: seq(seq(A162624(n,k), k=1..n), n=1..10); # _Nathaniel Johnston_, Apr 30 2011

%t Table[NestList[#+n^4-1&,n^4+n-1,n-1],{n,10}]//Flatten (* _Harvey P. Dale_, Apr 28 2022 *)

%Y Cf. A000584, A123865, A159797, A162609, A162610, A162611, A162612, A162613, A162614, A162615, A162616, A162622, A162623.

%K easy,nonn,tabl

%O 1,2

%A _Omar E. Pol_, Jul 12 2009

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)