OFFSET
1,2
COMMENTS
These are the numbers k such that mean of the k-th row of the Delannoy triangle at A027926 is an integer. All such k except 0 and 1 are multiples of 4.
Is A181824 a subsequence? The first 31 terms appear in this sequence. - Jaycob Coleman, Mar 08 2015 [The first 323 terms of A181824 appear in this sequence. - Amiram Eldar, Mar 31 2021]
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
EXAMPLE
Row 4 of the Delannoy triangle is (1,5,5,1), with sum 12 = A000129(4) divisible by 4.
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Sep 01 2014
STATUS
approved