A118295 Start with 20 and repeatedly reverse the digits and add 1 to get the next term.

20, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10, 2, 3, 4, 5, 6, 7, 8, 9, 10

Offset: 1

Author

Luc Stevens (lms022(AT)yahoo.com), May 14 2006

Keywords

• nonn
• easy
• base

Comments

After 1 step enters a cycle of length 9.

Examples

			After a(9) = 10 we get a(10) = (reversed digits of a(9)) + 1 = 01 + 1 = 2. - _David A. Corneth_, Jan 08 2024
		

Links

• N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki.
• Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,1).

Crossrefs

Cf. A118551.

Essentially the same as A117230.

Programs

Mathematica

PadRight[{20},100,Range[2,10]] (* Paolo Xausa, Jan 08 2024 *)

PARI

a(n) = if(n == 1, return(20)); return(((n-1)%9) + 2) \\ David A. Corneth, Jan 08 2024