A152592 Consider the last letter of each of the English words zero, one, two, three, four, five, ... . Write down 0 for a vowel {a,e,i,o,u}, 1 for a consonant.

0, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1

Offset: 0

Author

Paul Curtz, Dec 09 2008

Keywords

• nonn
• word
• easy
• less

Links

• Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,-1,1).

Crossrefs

See A059437 for another version.

Formula

From Chai Wah Wu, Apr 18 2024: (Start)

a(n) = a(n-1) - a(n-5) + a(n-6) for n > 25.

G.f.: x^4*(x^21 - x^20 + x^17 - x^14 + x^13 - x^11 + x^10 - x^9 + x^8 - x^7 - x^2 + x - 1)/(x^6 - x^5 + x - 1). (End)

Extensions

Edited by N. J. A. Sloane, Apr 09 2009, Apr 11 2009

Extended by Nathaniel Johnston, May 05 2011