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 A162613 Triangle read by rows in which row n lists n terms, starting with n, with gaps = n^2-1 between successive terms. 10

%I

%S 1,2,5,3,11,19,4,19,34,49,5,29,53,77,101,6,41,76,111,146,181,7,55,103,

%T 151,199,247,295,8,71,134,197,260,323,386,449,9,89,169,249,329,409,

%U 489,569,649,10,109,208,307,406,505,604,703,802,901,11,131,251,371,491,611

%N Triangle read by rows in which row n lists n terms, starting with n, with gaps = n^2-1 between successive terms.

%C Note that the last term of the n-th row is A100104(n).

%H Harvey P. Dale, <a href="/A162613/b162613.txt">Table of n, a(n) for n = 1..1000</a>

%e Triangle begins:

%e 1;

%e 2, 5;

%e 3, 11, 19;

%e 4, 19, 34, 49;

%e 5, 29, 53, 77, 101;

%e 6, 41, 76, 111, 146, 181;

%t Table[NestList[#+n^2-1&,n,n-1],{n,11}]//Flatten (* _Harvey P. Dale_, Feb 24 2016 *)

%Y Cf. A000578, A100104, A159797, A159798, A162610, A162611, A162612.

%Y Cf. A100855 (row sums). - _R. J. Mathar_, Jul 20 2009

%K easy,nonn,tabl

%O 1,2

%A _Omar E. Pol_, Jul 09 2009

%E More terms from _Vincenzo Librandi_, Aug 02 2010

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Last modified August 4 09:03 EDT 2020. Contains 336201 sequences. (Running on oeis4.)