login
A160912
[1, 3, 5, 7, ...] convolved with [1, 4, 0, 0, 0, ...].
0
1, 7, 17, 27, 37, 47, 57, 67, 77, 87, 97, 107, 117, 127, 137, 147, 157, 167, 177, 187, 197, 207, 217, 227, 237, 247, 257, 267, 277, 287, 297, 307, 317, 327, 337, 347, 357, 367, 377, 387, 397, 407, 417, 427, 437, 447
OFFSET
1,2
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
Essentially a duplicate of A017353.
Sequence in context: A283610 A043517 A277594 * A017353 A147089 A045575
KEYWORD
nonn
AUTHOR
Gary W. Adamson, May 30 2009
EXTENSIONS
More terms from N. J. A. Sloane, May 31 2009
STATUS
approved