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

Author

M. F. Hasler, Feb 06 2016

Keywords

• nonn
• base
• word

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.

Examples

			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, ...
		

Crossrefs

Cf. A104059, A073029, A131744.

Programs

PARI

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