A145825 a(n) is in A145818 such that (4n-1-a(n))/2 is in A145818 as well

1, 5, 1, 5, 17, 21, 17, 21, 1, 5, 1, 5, 17, 21, 17, 21, 65, 69, 65, 69, 81, 85, 81, 85, 65, 69, 65, 69

Offset

1,2

Comments

Note that a(4n)=a(4n-2), a(4n-1)=a(4n-3).

Links

Table of n, a(n) for n=1..28.

Crossrefs

A145818 A145812 A145819 A145822

Sequence in context: A139426 A143384 A046611 * A101692 A281105 A327283

Adjacent sequences: A145822 A145823 A145824 * A145826 A145827 A145828

Keyword

nonn

Author

Vladimir Shevelev, Oct 20 2008

Status

approved