A113676 Number of elements of rows of Golomb's sequence A001462, with one less 2, interpreted as triangle: Start with first row 1. The row sum of row n-1 gives the number of elements taken from A001642 (one less 2) of row n.

1, 1, 2, 6, 27, 234, 6202, 1084009, 4362192095

Offset: 1

Author

Floor van Lamoen and Paul D. Hanna, Nov 06 2005

Keywords

• nonn
• more

Comments

a(n+1) gives row sum of row n of this triangle.

Conjecture: a(n) for n>1 gives first differences of Lionel Levine's sequence A014644(n) for n>=3.

Conjecture: Final elements of the rows form A014644 except for duplicate 2.

Examples

			The triangle begins
  1;
  2;
  3,3;
  4,4,4,5,5,5;
  ...
Row 4: [4,4,4,5,5,5] is generated from row 3: [3,3] because there are (3) 4's and (3) 5's in row 4.