A380189 a(n) is the number of coincidences of the first n terms of this sequence and the first n terms of A380188 in reverse order, i.e., the number of equalities a(k) = A380188(n-1-k) for 0 <= k < n.
0, 1, 0, 2, 0, 1, 1, 2, 1, 0, 3, 1, 0, 2, 0, 2, 2, 2, 2, 3, 3, 3, 1, 0, 3, 2, 3, 3, 4, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 3, 6, 6, 6, 6, 8, 7, 6, 5, 5, 5, 4, 4, 2, 1, 0, 3, 1, 0, 2, 0, 2, 2, 3, 5, 7, 7, 6, 5, 4, 5, 5, 6, 3, 2, 2, 1, 1, 4, 3, 1, 2, 3, 2, 4, 3, 4, 4
Offset: 0
Examples
For n = 7, the first 7 terms of this sequence and the first 7 terms of A380188 in reverse order are:
0, 1, 0, 2, 0, 1, 1
3, 3, 3, 2, 2, 1, 0
^ ^
with 2 coincidences, so a(7) = 2.
Links
- Pontus von Brömssen, Table of n, a(n) for n = 0..20000