A268490 Spelling out the characters (digits and commas) of the sequence and replacing letters A..Z with numbers 1..26 gives back the sequence.

20, 23, 15, 26, 5, 18, 15, 3, 15, 13, 13, 1, 20, 23, 15, 20, 8, 18, 5, 5, 3, 15, 13, 13, 1, 15, 14, 5, 6, 9, 22, 5, 3, 15, 13, 13, 1, 20, 23, 15, 19, 9, 24, 3, 15, 13, 13, 1, 6, 9, 22, 5, 3, 15, 13, 13, 1, 15, 14, 5, 5, 9, 7, 8, 20, 3, 15, 13, 13, 1, 15, 14, 5, 6, 9, 22, 5, 3, 15, 13, 13, 1, 20, 8, 18, 5, 5, 3, 15, 13, 13, 1, 15, 14, 5, 6, 9, 22, 5, 3, 15, 13, 13, 1, 15, 14, 5, 20, 8

Offset

1,1

Comments

A sequence with this property cannot start otherwise since 2 is the only digit equal to the first digit of the "code" (1-26) of the first letter of its English name.

Links

Table of n, a(n) for n=1..109.

Example

Spelling out the sequence data character-wise yields "two zero comma two three comma one five ..."
Coding the letters A..Z by 1..26 yields again the sequence 20, 23, 15, 26, 5, 18, 15, 3, 15, 13, 13, ...

Prog

(PARI) concat(apply(f=t->Vec(Vecsmall(concat(concat(apply(English, digits(t))), "comma")))%32, f(20))) \\ See A052360 for English()

Crossrefs

Cf. A104059, A073029, A131744.

Sequence in context: A139357 A104059 A104057 * A153717 A358424 A303303

Adjacent sequences: A268487 A268488 A268489 * A268491 A268492 A268493

Keyword

nonn,base,word

Author

M. F. Hasler, Feb 06 2016

Status

approved