A048933 Smallest factor i of any factorization used in the definition of A014575(n).

21, 15, 35, 30, 21, 27, 80, 201, 260, 210, 204, 150, 135, 158, 152, 161, 167, 141, 201, 231, 281, 152, 231, 204, 251, 201, 261, 140, 179, 311, 323, 315, 317, 231, 351, 215, 146, 350, 351, 317, 156, 300, 251, 261, 356, 240, 269, 165, 176, 396, 221, 231, 371, 231, 225, 201, 225, 281, 216, 210, 210, 327, 395, 275, 252, 255

Offset: 1

Author

Eric W. Weisstein

Keywords

• nonn
• base

References

• C. A. Pickover, "Vampire Numbers." Ch. 30 in Keys to Infinity. New York: Wiley, pp. 227-231, 1995.

Links

• Eric Weisstein's World of Mathematics, Vampire Number.

Crossrefs

The following sequences are all closely related: A020342, A014575, A080718, A048936, A144563.

Cf. A048934, ..., A048939.

Programs

Maple

# print d, not a, in the program of A014575 - R. J. Mathar, Jul 15 2016

Extensions

Edited by N. J. A. Sloane, Jan 03 2009

More terms from R. J. Mathar, Jul 15 2016