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A P_4-stuttered arithmetic progression with a(n+1)=a(n) if n is square, a(n+1)=a(n)+2 otherwise.

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8

1, 1, 3, 5, 5, 7, 9, 11, 13, 13, 15, 17, 19, 21, 23, 25, 25, 27, 29, 31, 33, 35, 37, 39, 41, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179, 181 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`P_4(i) = the i-th square.`
	REFERENCES	`Iannucci, D. and Mills-Taylor, D. On Generalizing the Connell Sequence. Journal of Integer Sequences v.2(1999) Article 99.1.7.` `Bullington, G. D., The Connell Sum Sequence, J. Integer Seq. 10 (2007), Article 07.2.6. (includes direct formula for a(n))`
	FORMULA	`a(n)=A045928(n)-n+1`
	CROSSREFS	`Cf. A001614, A122793, A122794, A122795, A122796, A122797, A122798, A122799` `Sequence in context: A023840 A131421 A088743 this_sequence A063202 A058020 A069201` `Adjacent sequences: A122797 A122798 A122799 this_sequence A122801 A122802 A122803`
	KEYWORD	`nonn,easy`
	AUTHOR	`Grady Bullington (bullingt(AT)uwosh.edu), Sep 14 2006`

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

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