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RUNS transform of A005606 (initial letter of English name for n).
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%I #12 Jun 04 2026 14:03:04

%S 1,1,2,2,2,1,1,1,1,2,2,2,1,1,20,20,20,10,10,100,200,200,200,100,100,

%T 1000,2000,2000,2000,1000,1000,1000,1000,2000,2000,2000,1000,1000,

%U 20000,20000,20000,10000,10000,100000,200000,200000,200000,100000,100000,1000000

%N RUNS transform of A005606 (initial letter of English name for n).

%e Zero, One, Two, Three, Four, Five, Six, Seven, Eight, ... have initial letters Z, O, T, T, F, F, S, S, E, ... with runs of length 1, 1, 2, 2, 2, 1, ..., which are the initial terms of the present sequence.

%Y Cf. A005606.

%K nonn

%O 0,3

%A _N. J. A. Sloane_, Jun 04 2026

%E More terms from _Michael S. Branicky_, Jun 04 2026