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Search: id:A104176
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| A104176 |
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a(n) = bitwise OR operation applied between every term of n-th row of Pascal's triangle, represented in decimal notation. |
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+0
2
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| 1, 1, 3, 3, 7, 15, 31, 55, 127, 127, 255, 511, 1023, 2047, 4095, 8191, 16383, 32767, 65535, 126975, 262143, 524287, 1048575, 2097151, 4194303, 8388607, 16777215, 33554431, 67108863, 134217727, 268435455, 536870911, 1073741823, 2147483647
(list; table; graph; listen)
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OFFSET
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0,3
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LINKS
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Eric Weisstein's World of Mathematics, Pascal's Triangle
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FORMULA
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Most but not all terms are of the form 2^n - 1 for some integer n. In the first 1600 terms we have: repeated numbers: 1, 3, 127 and 274877906943. Numbers not of form 2^n -1: 55, 126975.
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EXAMPLE
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Row 0 = 1 = 1
Row 1 = 1 OR 1 = 1
Row 2 = 1 OR 2 OR 1 = 3
Row 3 = 1 OR 3 OR 3 OR 1 = 3
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CROSSREFS
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Adjacent sequences: A104173 A104174 A104175 this_sequence A104177 A104178 A104179
Sequence in context: A056420 A030069 A004043 this_sequence A032294 A146034 A032029
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KEYWORD
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nonn,tabl
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AUTHOR
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Andrew G. West (WestA(AT)wlu.edu), Mar 28 2005
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