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 A161985 Table read by rows: the number 2n+1 followed by the numbers n+1 to 3n+1. 0

%I

%S 1,1,3,2,3,4,5,3,4,5,6,7,7,4,5,6,7,8,9,10,9,5,6,7,8,9,10,11,12,13,11,

%T 6,7,8,9,10,11,12,13,14,15,16,13,7,8,9,10,11,12,13,14,15,16,17,18,19,

%U 15,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,16,9,10,11,12,13,14,15,16,17

%N Table read by rows: the number 2n+1 followed by the numbers n+1 to 3n+1.

%C Row sums are 2(n+1)(2n+1). Row sums discarding the first column are (2n+1)^2,

%C that is the square of the element in the first column.

%e The table with rows starting at n=0 is

%e 1,1;

%e 3,2,3,4;

%e 5,3,4,5,6,7;

%e 7,4,5,6,7,8,9,10;

%e 9,5,6,7,8,9,10,11,12,13;

%K nonn,tabf,less

%O 0,3

%A _Juri-Stepan Gerasimov_, Jun 23 2009

%E Edited by _R. J. Mathar_, Jun 28 2009

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Last modified December 3 20:26 EST 2022. Contains 358543 sequences. (Running on oeis4.)