id:A081348 - OEIS Search Results

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First row in maze arrangement of natural numbers.

+0
4

1, 6, 7, 20, 21, 42, 43, 72, 73, 110, 111, 156, 157, 210, 211, 272, 273, 342, 343, 420, 421, 506, 507, 600, 601, 702, 703, 812, 813, 930, 931, 1056, 1057, 1190, 1191, 1332, 1333, 1482, 1483, 1640, 1641, 1806, 1807, 1980, 1981, 2162, 2163, 2352, 2353, 2550 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n) = (2n^2+4n+3-(2n+1)(-1)^n)/2 a(2n)=A054569(n). a(2n+1)=2*A014105(n+1).`
	CROSSREFS	`Cf. A081347, A080335.` `Sequence in context: A028324 A074342 A102789 this_sequence A002361 A041185 A042389` `Adjacent sequences: A081345 A081346 A081347 this_sequence A081349 A081350 A081351`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 19 2003`

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Last modified September 6 16:04 EDT 2008. Contains 143483 sequences.

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