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Search: id:A133851
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| A133851 |
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Sloping binary representation of powers of 4 (A000302), slope = -1 . |
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+0
1
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| 1, 0, 0, 4, 0, 0, 16, 0, 0, 64, 0, 0, 256, 0, 0, 1024, 0, 0, 4096, 0, 0, 16384, 0, 0, 65536, 0, 0, 262144, 0, 0, 1048576, 0, 0, 4194304, 0, 0, 16777216, 0, 0, 67108864, 0, 0, 268435456, 0, 0, 1073741824, 0, 0, 4294967296, 0, 0, 17179869184, 0, 0
(list; graph; listen)
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OFFSET
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0,4
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EXAMPLE
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When powers of 4 are written in binary (see A098608), under each other as:
0000000000001 (1)
0000000000100 (4)
0000000010000 (16)
0000001000000 (64)
0000100000000 (256)
0010000000000 (1024)
1000000000000 (4096)
and one collects their bits from the column=0 to NW-direction (from the least to the most significant end), one gets 1 (1), 00 (0), 000 (0), 0100 (4), 00000 (0), 000000 (0), 0010000 (16), etc. (see 0105033 for similar transformation done on nonnegative integers)
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CROSSREFS
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Cf. A037095, A077957, A105033, A000302, A098608, A102370(sloping binary numbers).
Sequence in context: A049207 A092219 A069026 this_sequence A062685 A028699 A019259
Adjacent sequences: A133848 A133849 A133850 this_sequence A133852 A133853 A133854
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KEYWORD
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base,nonn
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Jan 06 2008
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