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Search: id:A143908
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| 1, 3, 1, 3, 3, 4, 3, 3, 12, 10, 3, 3, 12, 30, 28, 3, 3, 12, 30, 84, 76, 3, 3, 12, 30, 84, 228, 208, 3, 3, 12, 30, 84, 228, 624, 568, 3, 3, 12, 30, 84, 228, 624, 1704, 1552
(list; table; graph; listen)
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OFFSET
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0,2
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COMMENT
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Right border = A026150: (1, 1, 4, 10, 28, 76, 208, 568,...).
Row sums = (1, 4, 10, 28, 76,...) = INVERT transform of (1, 3, 3, 3,...).
Sum of n-th row terms = rightmost term of next row.
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FORMULA
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Eigentriangle by rows, n terms of (3 * A026150) followed by A026150(n).
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EXAMPLE
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First few rows of the triangle =
1;
3, 1;
3, 3, 4;
3, 3, 12, 10;
3, 3, 12, 30, 28;
3, 3, 12, 30, 84, 76;
3, 3, 12, 30, 84, 228, 208;
...
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CROSSREFS
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A026150
Sequence in context: A029154 A136297 A049996 this_sequence A117572 A029153 A060241
Adjacent sequences: A143905 A143906 A143907 this_sequence A143909 A143910 A143911
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KEYWORD
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nonn,tabl
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Sep 06 2008
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