id:A076448 - OEIS Search Results

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Numbers one more than a power of 2 which are the sum of n consecutive numbers one more than a power of 2.

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5, 17, 129, 4097, 2097153, 274877906945, 2361183241434822606849, 87112285931760246646623899502532662132737, 59285549689505892056868344324448208820874232148807968788202283012051522375647233 (list; graph; listen)

	OFFSET	`2,1`
	FORMULA	`a(n) =2^(2^(n-2)+n-1)+1 = A000051(A005126(n-2)).`
	EXAMPLE	`a(2)=5=2+3, a(3)=17=3+5+9, a(4)=129=5+9+17+33+65.`
	CROSSREFS	`Sequence in context: A012259 A113936 A012263 this_sequence A096310 A071057 A119769` `Adjacent sequences: A076445 A076446 A076447 this_sequence A076449 A076450 A076451`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Nov 07 2002`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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