OFFSET
1,1
COMMENTS
It is conjectured that a(n) = n + 34 for n > 27.
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..10000
FORMULA
G.f.: x*(-x^28 + x^27 - x^7 + x^6 - x^4 - 5*x^3 - 2*x^2 - 9*x + 18)/(x - 1)^2 (as conjectured in comments). - Chai Wah Wu, Jan 26 2020
EXAMPLE
7^18 = 1628413597910449, which contains three 1's, one 2, one 3, three 4's, one 5, one 6, one 7, one 8, three 9's and one 0, so 18 is in the sequence.
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Apr 01 2017
STATUS
approved