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A161985
Table read by rows: the number 2n+1 followed by the numbers n+1 to 3n+1.
0
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, 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, 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
OFFSET
0,3
COMMENTS
Row sums are 2(n+1)(2n+1). Row sums discarding the first column are (2n+1)^2,
that is the square of the element in the first column.
EXAMPLE
The table with rows starting at n=0 is
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;
CROSSREFS
Sequence in context: A055923 A035634 A091563 * A292787 A335944 A035366
KEYWORD
nonn,tabf,less
AUTHOR
EXTENSIONS
Edited by R. J. Mathar, Jun 28 2009
STATUS
approved