1,4

Seiichi Manyama, Table of n, a(n) for n = 1..10000

a(n) = a(n-9) + 5. for n > 9.

G.f.: x*(x^8 + 2*x^5 - x^4 + 2*x^3 + 1)/(x^10 - x^9 - x + 1). - Chai Wah Wu, Jan 06 2020

n | A321225 | a(n)

--+---------+-----

1 | 1 | 1

2 | 2 | 1

3 | 3 | 1

4 | 211 | 3

5 | 23 | 2

6 | 2112 | 4

7 | 3211 | 4

8 | 2321 | 4

9 | 12321 | 5

Cf. A068962, A321225.

Sequence in context: A061901 A322349 A322348 * A326015 A078822 A224980

Adjacent sequences: A321229 A321230 A321231 * A321233 A321234 A321235

nonn

Seiichi Manyama, Oct 31 2018

approved