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A061911

Square roots of the sum of the digits of n in the case that this is a perfect square.

+0
3

1, 2, 3, 3, 3, 1, 2, 3, 4, 4, 3, 3, 2, 3, 4, 4, 3, 4, 3, 4, 3, 3, 3, 4, 4, 3, 5, 4, 5, 5, 4, 5, 3, 5, 4, 1, 2, 3, 4, 4, 3, 2, 3, 4, 5, 3, 4, 5, 4, 4, 4, 4, 4, 3, 5, 5, 5, 4, 5, 3, 5, 4, 5, 5, 2, 3, 4, 4, 3, 4, 5, 4, 5, 4, 4, 5, 4, 4, 4, 3, 5, 5, 6, 4, 5, 5, 5, 5, 5, 5, 3, 4, 4, 4, 5, 3, 4, 3, 5, 4, 5, 4, 5, 4, 3 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`6^2 = 36 and 3+6 = 9 is a square, thus 3 is in the sequence. 13^2 = 169 and 1+6+9 = 16 is a square, thus 4 is in the sequence.`
	MAPLE	readlib(issqr): f := []: for n from 1 to 200 do if issqr(convert(convert(n^2, base, 10), `+`)) then f := [op(f), sqrt(convert(convert(n^2, base, 10), `+`))] fi; od; f;
	CROSSREFS	`Cf. A007953, A004159, A061909, A061910, A061912.` `Sequence in context: A153878 A118925 A016738 this_sequence A082239 A062745 A140733` `Adjacent sequences: A061908 A061909 A061910 this_sequence A061912 A061913 A061914`
	KEYWORD	`nonn,base`
	AUTHOR	`Asher Auel (asher.auel(AT)reed.edu), May 17 2001`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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