A095833 Triangle read by rows: T(n,k) = (n-k+1)*n, n>=1, 1<=k<=n.

1, 4, 2, 9, 6, 3, 16, 12, 8, 4, 25, 20, 15, 10, 5, 36, 30, 24, 18, 12, 6, 49, 42, 35, 28, 21, 14, 7, 64, 56, 48, 40, 32, 24, 16, 8, 81, 72, 63, 54, 45, 36, 27, 18, 9, 100, 90, 80, 70, 60, 50, 40, 30, 20, 10, 121, 110, 99, 88, 77, 66, 55, 44, 33, 22, 11, 144, 132, 120, 108, 96, 84

Offset

1,2

Links

Table of n, a(n) for n=1..72.

Example

   1
   4   2
   9   6   3
  16  12   8   4
  25  20  15  10   5
  36  30  24  18  12   6
  49  42  35  28  21  14   7
  64  56  48  40  32  24  16   8

Crossrefs

Cf. A002411 (row sums).

Sequence in context: A289506 A363268 A213778 * A163990 A082156 A283941

Adjacent sequences: A095830 A095831 A095832 * A095834 A095835 A095836

Keyword

easy,nonn,tabl

Author

Herman Jamke (hermanjamke(AT)fastmail.fm), Jul 10 2004

Status

approved