OFFSET
0,3
LINKS
Lapo Cioni, Luca Ferrari, and Rebecca Smith, Pop Stacks with a Bypass, arXiv:2406.16399 [cs.DM], 2024. See p. 78.
Index entries for linear recurrences with constant coefficients, signature (8,-20,18,-3).
FORMULA
a(n) = 8*a(n-1) - 20*(n-2) + 18*a(n-3) - 3*a(n-4) for n > 3.
MATHEMATICA
CoefficientList[Series[(1-x)(1-2x)(1-4x)/(1-8x+20x^2-18x^3+3x^4), {x, 0, 27}], x]
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Stefano Spezia, Jun 30 2024
STATUS
approved