id:A102118 - OEIS Search Results

Search: id:A102118

Displaying 1-1 of 1 results found.

page 1

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
5

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; listen)

	OFFSET	`0,5`
	COMMENT	`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: A103001 A065846 A047904 this_sequence A102119 A102121 A102120` `Adjacent sequences: A102115 A102116 A102117 this_sequence 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`

page 1

Search completed in 0.002 seconds

Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

AT&T Labs Research