OFFSET
0,3
COMMENTS
Permutation of nonnegative numbers.
LINKS
Index entries for linear recurrences with constant coefficients, signature (0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,-1).
FORMULA
EXAMPLE
MATHEMATICA
CoefficientList[Series[(x + 3*x^2 + 4*x^3 + 6*x^4 + x^5 + 6*x^6 + 6*x^7 + 6*x^8 + 3*x^9 + 6*x^10 + 6*x^11 + 6*x^12 + x^13 + 3*x^14 + 2*x^15) / ((1-x)^2*(1+x)*(1+x^2)*(1+x+x^2)*(1+x^3)*(1+x^6)), {x, 0, 66}], x] (* Stefano Spezia, Dec 27 2023 *)
CROSSREFS
KEYWORD
nonn,easy,tabf
AUTHOR
Philippe Deléham, Dec 01 2023
STATUS
approved