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A061516
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a(0) = 1; a(n) is obtained by incrementing each digit of a(n-1) by 4.
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0
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1, 5, 9, 13, 57, 911, 1355, 5799, 9111313, 13555757, 5799911911, 911131313551355, 1355575757995799, 579991191191113139111313, 9111313135513551355575713555757, 135557575799579957999119115799911911
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| In A061511-A061522, A061746-A061750 when the incremented digit exceeds 9 it is written as a 2-digit string. So 9+1 becomes the 2-digit string 10, etc.
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MATHEMATICA
| a[1]=1; a[n_]:=a[n]=FromDigits[Flatten[IntegerDigits/@(IntegerDigits[a[n-1]]+4)]]; Table[a[n], {n, 15}] - Zak Seidov (zakseidov(AT)yahoo.com), Mar 09 2006
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CROSSREFS
| Sequence in context: A117828 A117830 A191219 * A146135 A101116 A030772
Adjacent sequences: A061513 A061514 A061515 * A061517 A061518 A061519
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KEYWORD
| base,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), May 08 2001
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EXTENSIONS
| More terms from Larry Reeves (larryr(AT)acm.org), May 11 2001
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