A204085 Consider integers m such that both m and 2m are decimal pandigital numbers (A050278). The sequence gives indices of m in A050278.

1, 3, 7, 9, 13, 15, 25, 27, 31, 33, 37, 39, 49, 51, 55, 57, 61, 63, 73, 75, 79, 81, 85, 87, 153, 155, 156, 157, 163, 166, 177, 179, 180, 181, 187, 190, 193, 195, 217, 219, 226, 232, 273, 275, 276, 277, 283, 286, 297, 299, 300, 301, 307, 310, 313, 315, 337

Offset

1,2

Comments

The sequence consists of 184320 terms, the last is a(184320) = 1430987 and the largest m = A050278(1430987) = 4938271605 and corresponding 2m = A050278(3265920) = 9876543210 the largest decimal pandigital number.

Links

Table of n, a(n) for n=1..57.

Crossrefs

Cf. A050278, A203987, A204045, A204058.

Sequence in context: A024901 A258011 A000959 * A230076 A120226 A137310

Adjacent sequences: A204082 A204083 A204084 * A204086 A204087 A204088

Keyword

nonn,fini,base

Author

Zak Seidov, Jan 10 2012

Status

approved