OFFSET
0,2
COMMENTS
A131507(n), not in the same order.
1, 1, 1,
3, 1, 3,
3, 5, 3, 1, 9, 5,
5, 7, * 3, 1, = 15, 7,
5, 7, 9, 5, 3, 1, 25, 21, 9
7, 9, 11, 5, 3, 1, 35, 27, 11,
etc. etc. etc.
The latter triangle is the odd numbers of A094728(n+1) which is
1,
4, 3,
9, 8, 5,
16, 15, 12, 7,
25, 24, 21, 16, 9,
etc.
Without the first column, the triangle is A120070(n+2). This gives a link between the frequencies of the spectral lines of the H-atom and the Janet periodic table of the elements.
EXAMPLE
Triangle begins:
1,
3,
3, 5,
5, 7,
5, 7, 9,
7, 9, 11,
7, 9, 11, 13,
9, 11, 13, 15,
9, 11, 13, 15, 17,
....
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Paul Curtz, Nov 19 2015
STATUS
approved