1,1

Sequence could be extended to zero where a(0) would be 15.

Table of n, a(n) for n=1..80.

B. Deal, Blaine's Puzzle Blog.

Chuck Gaydos, Sequence puzzle posting at Clifford Pickover forum.

One ends with 'e' which is the 5th letter of the alphabet, hence a(1)=5. Two ends with 'o' which is the 15th letter of the alphabet, hence a(2)=15.

Cf. A005606.

Sequence in context: A290528 A161202 A154353 * A077348 A290829 A290837

Adjacent sequences: A114329 A114330 A114331 * A114333 A114334 A114335

easy,nonn,word

Blaine J. Deal Feb 06 2006

approved