OFFSET
0,2
MATHEMATICA
Accumulate[LinearRecurrence[{0, 2, 0, -1}, {1, 4, 20, 24, 40, 40}, 60]] (* Harvey P. Dale, Oct 06 2023 *)
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jan 22 2018
EXTENSIONS
More terms from Harvey P. Dale, Oct 06 2023
STATUS
approved