A170898 Triangle read by rows, obtained by dividing A151724 by 6.

1, 1, 3, 1, 3, 5, 7, 1, 3, 5, 9, 9, 7, 13, 15, 1, 3, 5, 9, 9, 9, 17, 25, 17, 7, 13, 23, 27, 19, 31, 31, 1, 3, 5, 9, 9, 9, 17, 25, 17, 9, 17, 29, 37, 33, 41, 57, 33, 7, 13, 23, 27, 27, 43, 67, 59, 27, 31, 55, 69, 49, 69, 63, 1, 3, 5, 9, 9, 9, 17, 25, 17, 9, 17, 29, 37, 33, 41

Offset

0,3

Comments

Row k has 2^k terms.

Right border gives the positive terms of A000225. - Omar E. Pol, Sep 28 2013

Links

N. J. A. Sloane, Table of n, a(n) for n = 0..1023

Formula

Equals A170905(n) - 1.

Example

Triangle begins:
1;
1,3;
1,3,5,7;
1,3,5,9,9,7,13,15;
1,3,5,9,9,9,17,25,17,7,13,23,27,19,31,31;
1,3,5,9,9,9,17,25,17,9,17,29,37,33,41,57,33,7,13,23,27,27,43,67,59,27,31,55,69,49,69,63;
...

Crossrefs

Cf. A169779 (partial sums).

Cf. A139250, A139251, A151723, A151724, A170899.

Sequence in context: A006257 A323555 A323553 * A321901 A321906 A321904

Adjacent sequences: A170895 A170896 A170897 * A170899 A170900 A170901

Keyword

nonn,tabf

Author

N. J. A. Sloane, Jan 10 2010

Status

approved