A055461 - OEIS

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A055461

Square decrescendo subsequences: triangle T(n,k) = (n-k)^2, n >= 1, 0 <= k < n.

1, 4, 1, 9, 4, 1, 16, 9, 4, 1, 25, 16, 9, 4, 1, 36, 25, 16, 9, 4, 1, 49, 36, 25, 16, 9, 4, 1, 64, 49, 36, 25, 16, 9, 4, 1, 81, 64, 49, 36, 25, 16, 9, 4, 1, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1, 121, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1, 144, 121, 100, 81, 64, 49, 36, 25, 16, 9, 4, 1 (list; table; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`a(n) = A004736(n)^2`
	EXAMPLE	`1; 4 1; 9 4 1; 16 9 4 1; etc.`
	CROSSREFS	`Sequence in context: A085383 A153265 A085691 * A104796 A132020 A175643` `Adjacent sequences: A055458 A055459 A055460 * A055462 A055463 A055464`
	KEYWORD	`easy,nonn,tabl`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Jun 26 2000`

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Last modified February 15 03:33 EST 2012. Contains 205694 sequences.