id:A081345 - OEIS Search Results

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First row in maze arrangement of natural numbers A081344.

+0
3

1, 4, 5, 16, 17, 36, 37, 64, 65, 100, 101, 144, 145, 196, 197, 256, 257, 324, 325, 400, 401, 484, 485, 576, 577, 676, 677, 784, 785, 900, 901, 1024, 1025, 1156, 1157, 1296, 1297, 1444, 1445, 1600, 1601, 1764, 1765, 1936, 1937, 2116, 2117, 2304, 2305, 2500 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)= n^2+n+1-n(-1)^n=n^2+n+1+n(-1)^(n+1). a(2n)=A053755(n) a(2n+1)=4*A004120(n)`
	CROSSREFS	`Cf. A081346.` `Sequence in context: A085768 A078713 A000695 this_sequence A137527 A024854 A025617` `Adjacent sequences: A081342 A081343 A081344 this_sequence A081346 A081347 A081348`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 19 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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