A345240 a(1) = 1; thereafter a(n) = A161406(a(n-1)).

1, 52, 158, 229, 278, 284, 304, 235, 289, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298, 291, 300, 153, 251, 298

Offset

1,2

Comments

A Spanish analog of A345126 (British English) and A345157 (US English).

Starting from n = 10 the sequence becomes periodic with period 5: repeat [291, 300, 153, 251, 298].

Links

Table of n, a(n) for n=1..54.

Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,1).

Mathematica

a[1]=1; a[n_]:=a[n]=Total[If[#=="ñ", 15, If[(s=LetterNumber@#)>14, s+1, s]]&/@Characters@StringDelete[IntegerName[a[n-1], "Spanish"], {" ", "-"}]]; Array[a, 100] (* Giorgos Kalogeropoulos, Jun 11 2021 *)
PadRight[{1, 52, 158, 229, 278, 284, 304, 235, 289}, 120, {300, 153, 251, 298, 291}] (* Harvey P. Dale, Sep 26 2024 *)

Crossrefs

Cf. A073327, A161406, A169639, A344013, A345126, A345157.

Sequence in context: A044765 A297627 A049059 * A292172 A166390 A161478

Adjacent sequences: A345237 A345238 A345239 * A345241 A345242 A345243

Keyword

nonn,word,easy

Author

Omar E. Pol and N. J. A. Sloane, Jun 11 2021

Status

approved