id:A000218 - OEIS Search Results

Search: id:A000218

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Take sum of squares of digits of previous term.

+0
2

3, 9, 81, 65, 61, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37, 58, 89, 145, 42, 20, 4, 16, 37 (list; graph; listen)

	OFFSET	`1,1`
	REFERENCES	`R. Honsberger, Ingenuity in Math., Random House, 1970, p. 83.` `A. Porges, A set of eight numbers, Amer. Math. Monthly, 52 (1945), 379-382.`
	FORMULA	`Periodic with period 8.`
	CROSSREFS	`Adjacent sequences: A000215 A000216 A000217 this_sequence A000219 A000220 A000221` `Sequence in context: A132294 A032330 A018604 this_sequence A124049 A067623 A055156`
	KEYWORD	`nonn,base`
	AUTHOR	`njas`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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