A134949 Primitive self-power numbers (or SPN's): terms in A134698 which cannot be obtained by taking an earlier term M (say) of A134698 and prefixing, inserting or suffixing a digit of M.

32564, 256432, 325648, 643256, 832564

Offset

1,1

Links

Table of n, a(n) for n=1..5.

Example

232564 is an SPN but is not primitive since it can be obtained from the SPN 32564 by prefixing the digit 2.

Crossrefs

Cf. A134698, A134947.

Sequence in context: A028240 A251000 A134698 * A134947 A172700 A101744

Adjacent sequences: A134946 A134947 A134948 * A134950 A134951 A134952

Keyword

nonn,base,more

Author

M. F. Hasler, Feb 02 2008

Status

approved