OFFSET
1,1
COMMENTS
Bradley Klee computed a(1)-a(10).
REFERENCES
Bradley Klee, Posting to Math Fun Mailing List, Apr 26 2020
FORMULA
Conjectures from Colin Barker, May 09 2020: (Start)
G.f.: x*(2 - 2*x + x^2 - 2*x^3 + 14*x^4 - 13*x^5 + 6*x^6 - 11*x^7 - 2*x^8 + 18*x^9 - 9*x^10) / (1 - x)^2.
a(n) = 2*a(n-1) - a(n-2) for n>11.
(End)
Conjecture: for n>=10, a(n) = 2*n. - Vaclav Kotesovec, May 10 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, May 05 2020
EXTENSIONS
More terms from Jinyuan Wang, May 09 2020
STATUS
approved