OFFSET
1,1
COMMENTS
It appears that the first difference sequence of {a(n)} is A080426.
EXAMPLE
D(1){1,2,3,4,5,6,...}={2,3,4,5,6,7,...} (delete first term),
D(2){2,3,4,5,6,7,...}={2,3,5,6,7,8,...} (delete 3rd term),
D(3){2,3,5,6,7,8,9,...}={2,3,6,7,8,9,...} (delete 3rd term),
D(4){2,3,6,7,8,9,10,...}={2,3,6,7,8,10,...} (delete 6th term),
...
Limiting case: {a(n)}.
CROSSREFS
KEYWORD
nonn
AUTHOR
John W. Layman, Oct 29 2004
STATUS
approved