A104142 Take any three consecutive terms and write them down (in English): their letters sum up to a square number. This is the slowest strictly increasing such sequence.

1, 2, 6, 10, 24, 73, 104, 200, 300, 401, 473

Offset

1,2

Comments

Numbers without "and" are used here. Starting with "0,1" would give another sequence.

Links

Table of n, a(n) for n=1..11.

Example

1 2 6 = "one+two+six" = 9 letters; 9 is 3^2.
300 401 473 = "three hundred + four hundred one + four hundred seventy three" = 49 letters; 49 is 7^2.

Crossrefs

Sequence in context: A370587 A200220 A188224 * A258143 A369290 A079713

Adjacent sequences: A104139 A104140 A104141 * A104143 A104144 A104145

Keyword

base,easy,nonn,word

Author

Eric Angelini, Mar 07 2005

Status

approved