A345240 - OEIS

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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

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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