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A055508 H is the first, fifth, sixteenth, ..., letter in the sequence not counting spaces and commas. 6
1, 5, 16, 25, 36, 38, 47, 49, 57, 59, 71, 81, 93, 103, 119, 134, 141, 149, 156, 172, 176, 184, 194, 198, 218, 234, 238, 254, 258, 281, 299, 303, 313, 321, 325, 343, 347, 363, 365, 369, 379, 385, 389, 397, 407, 411, 419, 427, 429, 433, 450, 454, 469, 471, 475 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Along with the letters "T" and "I", this completes the series, i.e. no other letters in the alphabet can substain a sequence with such a definition.

LINKS

Table of n, a(n) for n=1..55.

CROSSREFS

Cf. A005224 and A049525.

Sequence in context: A069482 A274012 A102045 * A274356 A275178 A171787

Adjacent sequences:  A055505 A055506 A055507 * A055509 A055510 A055511

KEYWORD

easy,nonn,word

AUTHOR

Robert G. Wilson v, Jun 29 2000

STATUS

approved

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Last modified July 24 03:48 EDT 2017. Contains 289717 sequences.