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A102112 Iccanobirt numbers (2 of 15): a(n) = a(n-1) + R(a(n-2)) + a(n-3), where R is the digit reversal function A004086. 6
0, 0, 1, 1, 2, 4, 7, 13, 24, 62, 117, 167, 940, 1818, 2034, 11155, 17275, 74420, 142846, 162568, 885229, 1893336, 2978492, 10197702, 15039830, 38797423, 52888176, 100407789, 206394037, 1246986214, 2077887605, 6411178063, 12726051979 (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

A004086(a(n)) = A102120(n).

MATHEMATICA

R[n_]:=FromDigits[Reverse[IntegerDigits[n]]]; Clear[a]; a[0]=0; a[1]=0; a[2]=1; a [n_]:=a[n]=a[n-1]+R[a[n-2]]+a[n-3]; Table[a[n], {n, 0, 40}]

CROSSREFS

Cf. A102111-A102125.

Sequence in context: A086445 A127602 A113291 * A102113 A034440 A000074

Adjacent sequences:  A102109 A102110 A102111 * A102113 A102114 A102115

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 14 20:13 EST 2012. Contains 205663 sequences.