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Search: id:A131436
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| A131436 |
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Triangle read by rows, (n-1) zeros followed by 2^n - 1. |
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+0
4
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| 1, 0, 3, 0, 0, 7, 0, 0, 0, 15, 0, 0, 0, 0, 31, 0, 0, 0, 0, 0, 63, 0, 0, 0, 0, 0, 0, 127, 0, 0, 0, 0, 0, 0, 0, 255
(list; table; graph; listen)
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OFFSET
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1,3
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FORMULA
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2*A059268(n)-A059268(n+1). - Paul Curtz (bpcrtz(AT)free.fr), Jul 03 2008
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EXAMPLE
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First few rows of the triangle are:
1;
0, 3;
0, 0, 7;
0, 0, 0, 15;
0, 0, 0, 0, 31;
...
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CROSSREFS
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Cf. A131437, A131438, A131439.
Sequence in context: A110620 A060284 A036275 this_sequence A046765 A046777 A140577
Adjacent sequences: A131433 A131434 A131435 this_sequence A131437 A131438 A131439
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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), Jul 11 2007
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