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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 (list; graph; refs; listen; history; text; internal format)
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.

LINKS

Table of n, a(n) for n=0..81.

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 A035366 A114751

Adjacent sequences:  A161982 A161983 A161984 * A161986 A161987 A161988

KEYWORD

nonn,tabf,less

AUTHOR

Juri-Stepan Gerasimov, Jun 23 2009

EXTENSIONS

Edited by R. J. Mathar, Jun 28 2009

STATUS

approved

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Last modified November 23 20:23 EST 2017. Contains 295141 sequences.