A049302 Numbers k such that k is a substring of 4^k.

6, 10, 17, 25, 36, 42, 50, 59, 60, 61, 72, 73, 78, 79, 81, 84, 86, 87, 89, 92, 93, 95, 96, 160, 200, 212, 222, 225, 227, 239, 260, 261, 269, 290, 291, 296, 300, 301, 304, 311, 313, 315, 324, 326, 327, 330, 336, 344, 345, 348, 350, 355, 362, 372, 378, 379, 381

Offset

1,1

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A000302, A032740, A049301-A049307.

Includes A288845.

Sequence in context: A320493 A315357 A315358 * A020718 A048587 A351661

Adjacent sequences: A049299 A049300 A049301 * A049303 A049304 A049305

Keyword

nonn,base,easy

Author

David W. Wilson

Status

approved