id:A129142 - OEIS Search Results

Search: id:A129142

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Start with the empty sequence and append in step k the consecutive numbers 2^k-1 to 2^k+k-2.

+0
3

1, 3, 4, 7, 8, 9, 15, 16, 17, 18, 31, 32, 33, 34, 35, 63, 64, 65, 66, 67, 68, 127, 128, 129, 130, 131, 132, 133, 255, 256, 257, 258, 259, 260, 261, 262, 511, 512, 513, 514, 515, 516, 517, 518, 519, 1023, 1024, 1025, 1026, 1027, 1028, 1029, 1030, 1031, 1032, 2047 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`Inspired by A127330.`
	EXAMPLE	`In step 4 the numbers 2^4-1 to 2^4+4-2 are appended: 15, 16, 17, 18.`
	PROGRAM	`(MAGMA) &cat[ [2^k-1..2^k+k-2]: k in [1..11] ];`
	CROSSREFS	`Cf. A127330, A129143.` `Sequence in context: A100452 A004201 A109054 this_sequence A075752 A046541 A047344` `Adjacent sequences: A129139 A129140 A129141 this_sequence A129143 A129144 A129145`
	KEYWORD	`nonn,easy`
	AUTHOR	`Klaus Brockhaus (klaus-brockhaus(AT)t-online.de), Mar 31 2007`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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