A083354 - OEIS

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A083354

Square-root of coefficients of power series: A083352(x)^2 + A083352(x) - 1; term-by-term square-root of A083353.

1, 3, 6, 9, 12, 15, 18, 24, 33, 36, 42, 54, 66, 78, 87, 99, 129, 144, 159, 180, 198, 231, 264, 276, 300, 333, 387, 420, 429, 456, 531, 582, 603 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`After the first term, all terms seem to be a multiple of 3.`
	FORMULA	`a(n) = sqrt(A083353(n))`
	EXAMPLE	`A083352(x)=1 + 3x + 9x^2 + 9x^3 + 3x^4 + 15x^5 + 33x^6 +...; so that` `A083353(x) = A083352(x)^2 + A083352(x) - 1 = 1 + 9x + 36x^2 + 81x^3 + 144x^4 + 225x^5 +...`
	CROSSREFS	`Cf. A083352, A083353.` `Sequence in context: A193803 A039004 A070021 * A156242 A060293 A194273` `Adjacent sequences: A083351 A083352 A083353 * A083355 A083356 A083357`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Apr 26 2003`

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Last modified February 14 11:17 EST 2012. Contains 205623 sequences.