id:A083352 - OEIS Search Results

Search: id:A083352

Displaying 1-1 of 1 results found.

page 1

Least positive integer coefficients of power series A(x) such that the coefficients of A(x)^2 + A(x) - 1 consist entirely of squares.

+0
3

1, 3, 9, 9, 3, 15, 33, 18, 36, 24, 75, 96, 51, 96, 159, 165, 255, 168, 27, 60, 333, 255, 66, 18, 441, 291, 735, 258, 390, 696, 480, 696, 1062 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`After the first term, all terms seem to be a multiple of 3.`
	EXAMPLE	`A(x)=1 + 3x + 9x^2 + 9x^3 + 3x^4 + 15x^5 + 33x^6 +...; so that A083353(x) =` `A(x)^2 + A(x) - 1 = 1 + 9x + 36x^2 + 81x^3 + 144x^4 + 225x^5 + 324x^6 +...`
	CROSSREFS	`Cf. A083353, A083354.` `Sequence in context: A103555 A157349 A159811 this_sequence A091559 A084762 A111120` `Adjacent sequences: A083349 A083350 A083351 this_sequence A083353 A083354 A083355`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Apr 26 2003`

page 1

Search completed in 0.002 seconds

Last modified December 13 23:45 EST 2009. Contains 170824 sequences.

AT&T Labs Research