A046434 Numbers such that 4 steps are needed to reach a prime under "Sum of digits raised to its digits' powers" procedure.

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

Offset

1,1

Links

Table of n, a(n) for n=1..53.

Crossrefs

Cf. A046431.

Sequence in context: A269519 A175161 A045875 * A111046 A205187 A162819

Adjacent sequences: A046431 A046432 A046433 * A046435 A046436 A046437

Keyword

nonn,base

Author

Patrick De Geest, Jul 15 1998

Status

approved