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A323641
Triangle read by rows in which row n lists the first 2^n terms of A323642, n >= 1.
8
1, 2, 1, 2, 3, 6, 1, 2, 3, 6, 3, 6, 9, 18, 1, 2, 3, 6, 3, 6, 9, 18, 3, 6, 9, 18, 9, 18, 27, 54, 1, 2, 3, 6, 3, 6, 9, 18, 3, 6, 9, 18, 9, 18, 27, 54, 3, 6, 9, 18, 9, 18, 27, 54, 9, 18, 27, 54, 27, 54, 81, 162, 1, 2, 3, 6, 3, 6, 9, 18, 3, 6, 9, 18, 9, 18, 27, 54, 3, 6, 9, 18, 9, 18, 27, 54, 9, 18
OFFSET
1,2
FORMULA
a(n) = A323651(n+2)/4.
EXAMPLE
Written as an irregular triangle in which the row lengths are the terms of A000079 multiplied by 2 the sequence begins:
1,2;
1,2,3,6;
1,2,3,6,3,6,9,18;
1,2,3,6,3,6,9,18,3,6,9,18,9,18,27,54;
1,2,3,6,3,6,9,18,3,6,9,18,9,18,27,54,3,6,9,18,9,18,27,54,9,18,27,54,27,54,81,162;
...
It appears that the right border gives A008776.
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Mar 03 2019
STATUS
approved