A143124 Triangle read by rows: T(n,k) = Sum_{j=k..n} A001462(j), 1<=k<=n, A001462 = Golomb's sequence.

1, 3, 2, 5, 4, 2, 8, 7, 5, 3, 11, 10, 8, 6, 3, 15, 14, 12, 10, 7, 4, 19, 18, 16, 14, 11, 8, 4, 23, 22, 20, 18, 15, 12, 8, 4, 28, 27, 25, 23, 20, 17, 13, 9, 5, 33, 32, 30, 28, 25, 22, 18, 14, 10, 5, 38, 37, 35, 33, 30, 27, 23, 19, 15, 10, 5, 44, 43, 41, 39, 36, 33, 29, 25, 21, 16, 11, 6

Offset

1,2

Links

Andrew Howroyd, Table of n, a(n) for n = 1..1275 (rows 1..50)

Example

Triangle begins:
   1;
   3,  2;
   5,  4,  2;
   8,  7,  5,  3;
  11, 10,  8,  6,  3;
  15, 14, 12, 10,  7,  4;
  19, 18, 16, 14, 11,  8,  4;
  23, 22, 20, 18, 15, 12,  8, 4;
  28, 27, 25, 23, 20, 17, 13, 9, 5;
  ...
T(5,3) = 8 = (3 + 3 + 2) where Golomb's sequence = (1, 2, 2, 3, 3, 4, 4, 4,...).

Crossrefs

Column 1 is A001463.

Main diagonal is A001462.

Row sums are A143125.

Sequence in context: A371908 A143956 A110661 * A205400 A205850 A204890

Adjacent sequences: A143121 A143122 A143123 * A143125 A143126 A143127

Keyword

nonn,tabl

Author

Gary W. Adamson and Roger L. Bagula, Jul 26 2008

Extensions

Some terms corrected by Andrew Howroyd, Sep 24 2025

Status

approved