A133854 - OEIS

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A133854

a(n)a(n-13)=a(n-1)a(n-12)+a(n-6)+a(n-7) with initial terms a(1)=...=a(13)=1.

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 5, 7, 9, 11, 13, 17, 25, 37, 53, 73, 97, 321, 549, 781, 1017, 1257, 1501, 1995, 2985, 4471, 6453, 8931, 11905, 39433, 67457, 95977, 124993, 154505, 184513, 245273, 367041, 549817, 793601, 1098393, 1464193, 4849891 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,14`
	LINKS	`P. Heideman and E. Hogan, A New Family of Somos-Like Recurrences`
	FORMULA	`Sequence also generated by the linear recurrence 124*(u(n-12)-u(n-24))+u(n-36) with the initial 36 terms given by the quadratic recurrence.`
	MAPLE	`a := proc(n) option remember; if n<=13 then RETURN(1); else RETURN((a(n-1)*a(n-12)+a(n-6)+a(n-7))/a(n-13)); fi; end;`
	CROSSREFS	`Sequence in context: A050150 A062090 A172095 * A030155 A143448 A039786` `Adjacent sequences: A133851 A133852 A133853 * A133855 A133856 A133857`
	KEYWORD	`easy,nonn`
	AUTHOR	`Emilie Hogan (eahogan(AT)math.rutgers.edu), Sep 26 2007`

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Last modified February 15 17:46 EST 2012. Contains 205835 sequences.