A061517 a(0) = 0; a(n) is obtained by incrementing each digit of a(n-1) by 4.

0, 4, 8, 12, 56, 910, 1354, 5798, 9111312, 13555756, 5799911910, 911131313551354, 1355575757995798, 579991191191113139111312, 9111313135513551355575713555756, 135557575799579957999119115799911910

Offset: 0

Author

Amarnath Murthy, May 08 2001

Keywords

• base
• nonn

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.

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..27

Programs

Mathematica

NestList[FromDigits[Flatten[IntegerDigits/@(IntegerDigits[#]+4)]]&,0,20] (* Harvey P. Dale, Nov 20 2020 *)

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), May 11 2001