OFFSET
1,2
LINKS
FORMULA
Odd integers convolved with [1, 4, 0, 0, 0, ...].
EXAMPLE
a(3) = 17 = (5, 3, 1) * (1, 4, 0) = (5 + 12 + 0).
MATHEMATICA
Table[ListConvolve[Range[1, 2n-1, 2], PadRight[{1, 4}, n, 0]], {n, 50}]//Flatten (* or *) Join[{1}, Range[7, 450, 10]] (* or *) LinearRecurrence[{2, -1}, {1, 7, 17}, 50] (* Harvey P. Dale, Apr 28 2018 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Gary W. Adamson, May 30 2009
EXTENSIONS
More terms from N. J. A. Sloane, May 31 2009
STATUS
approved