A139357 Sequence describing the positions of the consonants when the sequence is written in French (version 2).

20, 23, 1, 5, 3, 4, 6, 8, 9, 10, 11, 12, 15, 17, 18, 21, 22, 26, 27, 30, 31, 33, 35, 36, 39, 40, 43, 44, 46, 48, 49, 51, 54, 56, 59, 60, 62, 64, 65, 67, 68, 69, 71, 72, 75, 76, 78, 79, 80, 82, 84, 85, 87, 88, 89, 90, 93, 94, 96, 97, 98, 99, 101, 102, 104, 105

Offset

1,1

Comments

The sequence depends on how the initial terms are selected - see the Angelini article for the precise definition.

The initial terms are selected such that the sequence starts with 6 even numbers less than 20. - Tyler Busby, Jan 01 2023

Links

Table of n, a(n) for n=1..66.

Eric Angelini, Jeux de suites, in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris.

Prog

(PARI) lista(n) = frconspos([20, 23, 1, 5])(n)
/* see A139356 for frconspos() */
\\ Tyler Busby, Jan 01 2023

Crossrefs

Cf. A139212, A139356, A139358.

Sequence in context: A033906 A367620 A322323 * A104059 A104057 A268490

Adjacent sequences: A139354 A139355 A139356 * A139358 A139359 A139360

Keyword

nonn,word,easy

Author

N. J. A. Sloane (based on Angelini's article), Jun 08 2008

Extensions

More terms from Tyler Busby, Jan 01 2023

Status

approved