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A128444
Array T by antidiagonals: T(n,k)=Floor(k*3^(n/2)).
1
1, 3, 3, 5, 6, 5, 6, 9, 10, 9, 8, 12, 15, 18, 15, 10, 15, 20, 27, 31, 27, 12, 18, 25, 36, 46, 54, 46, 13, 21, 31, 45, 62, 81, 93, 81, 15, 24, 36, 54, 77, 108, 140, 162, 140, 17, 27, 41, 63, 93, 135, 187, 243, 280, 243, 19, 30, 46, 72, 109, 162, 233, 324, 420, 486, 420, 20, 33
OFFSET
1,2
COMMENTS
Row 1 = A022838; Row 2 = A008585; Column 1 = A017913; T(n,n) = A128443(n).
EXAMPLE
Northwest corner:
1 3 5 6 8
3 6 9 12 15
5 10 15 20 25
9 18 27 36 45
CROSSREFS
Cf. A128443.
Sequence in context: A243305 A334075 A140351 * A317745 A204250 A131948
KEYWORD
nonn,tabl
AUTHOR
Clark Kimberling, Mar 03 2007
STATUS
approved