A115686 Powerful(1) numbers (A001694) whose digit reversal is a prime number.

16, 32, 125, 128, 196, 200, 361, 392, 500, 784, 1024, 1352, 1369, 1372, 1444, 1600, 1681, 2000, 3200, 3844, 5000, 7225, 7688, 7921, 9025, 9248, 9409, 9800, 10976, 11236, 12500, 12800, 13448, 14161, 14792, 16000, 18496, 19321, 19600, 20000

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Index entries for sequences related to powerful numbers

Example

7688=2^3*31^2 is powerful and 8867 is prime.

Crossrefs

Cf. A001694.

Sequence in context: A045071 A007824 A235056 * A088112 A272697 A232510

Adjacent sequences: A115683 A115684 A115685 * A115687 A115688 A115689

Keyword

nonn,base

Author

Giovanni Resta, Jan 31 2006

Status

approved