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A046434 Numbers such that 4 steps are needed to reach a prime under "Sum of digits raised to its digits' powers" procedure. 1
16, 24, 42, 60, 61, 67, 76, 89, 98, 124, 134, 135, 142, 143, 153, 204, 214, 227, 240, 241, 246, 264, 272, 277, 299, 304, 305, 314, 315, 339, 340, 341, 347, 350, 351, 357, 374, 375, 393, 402, 403, 412, 413, 420, 421, 426, 430, 431, 437, 455, 462, 473, 503 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
CROSSREFS
Cf. A046431.
Sequence in context: A269519 A175161 A045875 * A111046 A205187 A162819
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Jul 15 1998
STATUS
approved

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)