A172049 Irregular triangle T(n,k) = 2k-1 with A008794(n+2) values in row n.

1, 1, 1, 3, 5, 7, 1, 3, 5, 7, 1, 3, 5, 7, 9, 11, 13, 15, 17, 1, 3, 5, 7, 9, 11, 13, 15, 17, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43

Offset

1,4

Comments

These are the values A172002(2*n)-A172002(2*n-1) arranged in a table by adding line breaks.

The last (and largest) numbers in the lines are in A056220(floor(n+1)/2).

Links

Table of n, a(n) for n=1..82.

Example

1;
1;
1, 3, 5, 7;
1, 3, 5, 7;
1, 3, 5, 7, 9, 11, 13, 15, 17;
1, 3, 5, 7, 9, 11, 13, 15, 17;
1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31;
1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31;
1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43,...

Crossrefs

Cf. A158405.

Sequence in context: A133069 A192327 A266295 * A021032 A212120 A128059

Adjacent sequences: A172046 A172047 A172048 * A172050 A172051 A172052

Keyword

nonn,easy,tabf

Author

Paul Curtz, Jan 24 2010

Status

approved