A028330 Elements to the right of the central elements of the even-Pascal triangle A028326.

2, 2, 6, 2, 8, 2, 20, 10, 2, 30, 12, 2, 70, 42, 14, 2, 112, 56, 16, 2, 252, 168, 72, 18, 2, 420, 240, 90, 20, 2, 924, 660, 330, 110, 22, 2, 1584, 990, 440, 132, 24, 2, 3432, 2574, 1430, 572, 156, 26, 2, 6006, 4004, 2002, 728, 182, 28, 2, 12870, 10010, 6006, 2730

Offset

0,1

Links

Table of n, a(n) for n=0..59.

Formula

a(n) = 2 * A014413(n). - Sean A. Irvine, Dec 29 2019

Crossrefs

Sequence in context: A242649 A294876 A293514 * A293524 A363831 A233591

Adjacent sequences: A028327 A028328 A028329 * A028331 A028332 A028333

Keyword

nonn,tabf

Author

Mohammad K. Azarian

Extensions

More terms from James A. Sellers

Status

approved