A336822 Integers with an even number of letters when written in Spanish.

3, 4, 6, 8, 10, 11, 12, 15, 17, 19, 20, 23, 24, 26, 28, 33, 34, 36, 38, 40, 41, 42, 45, 47, 49, 53, 54, 56, 63, 64, 66, 68, 73, 74, 76, 78, 83, 84, 86, 88, 93, 94, 96, 98, 100, 103, 104, 106, 108, 110, 111, 112, 115, 117, 119, 120, 123, 124, 126, 128, 133, 134, 136, 138, 140, 141, 142, 145, 147, 149

Offset: 1

Author

Rodolfo Kurchan, Aug 04 2020

Keywords

• nonn
• word

Examples

			a(4) = 8 because 8 in Spanish is written "ocho" and has 4 letters.
		

References

• Rodolfo Kurchan, Problem 15, Diversiones con Números y Figuras, (2000).

Crossrefs

Cf. A001161.

Programs

Mathematica

Select[Range@ 150, EvenQ@ StringLength@ StringDelete[IntegerName[#, {"Spanish"}], " "] &] (* Michael De Vlieger, Aug 21 2020 *)