A102118 - OEIS

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A102118

Iccanobirt numbers (8 of 15): a(n) = R(a(n-1) + a(n-2) + a(n-3)), where R is the digit reversal function A004086.

0, 0, 1, 1, 2, 4, 7, 31, 24, 26, 18, 86, 31, 531, 846, 8041, 8149, 63071, 16297, 71578, 649051, 629637, 6620531, 9129987, 55108361, 97885807, 551421261, 924514407, 5741283751, 9149127127, 58252941851, 92725334137, 511304721061 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	COMMENTS	`Digit reversal variation of Tribonacci numbers A000073.` `Inspired by Iccanobif numbers: A001129, A014258-A014260.`
	FORMULA	`a(n) = A004086(A000073(n)).`
	MATHEMATICA	`R[n_]:=FromDigits[Reverse[IntegerDigits[n]]]; Clear[a]; a[0]=0; a[1]=0; a[2]=1; a [n_]:=a[n]=R[a[n-1]+a[n-2]+a[n-3]]; Table[a[n], {n, 0, 40}]`
	CROSSREFS	`Cf. A102111-A102125.` `Sequence in context: A179386 A065846 A047904 * A102119 A102121 A102120` `Adjacent sequences: A102115 A102116 A102117 * A102119 A102120 A102121`
	KEYWORD	`nonn,base,easy`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com) and Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 30 2004`

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Last modified February 16 15:27 EST 2012. Contains 205930 sequences.