OFFSET
1,2
COMMENTS
This sequence is strictly increasing.
For any n>0, a(n+1)=index of last term of n-th run of consecutive terms in arithmetic progression in A281579.
LINKS
Rémy Sigrist, Table of n, a(n) for n = 1..10000
FORMULA
a(n)=2-n+Sum_{k=1..n-1} A281579(k) for any n>0.
CROSSREFS
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Jan 29 2017
STATUS
approved