A245386 Numbers in A245385 where P, Q, R, and S are all distinct.

164, 195, 265, 498, 1664, 1995, 2665, 4847, 4998, 6545, 7424, 16664, 19995, 21775, 24996, 26665, 43243, 49998, 86486, 148480, 166664, 175150, 199995, 217775, 249996, 266665, 368180, 484847, 499998, 654545, 742424, 1001001, 1081075, 1216216, 1249992, 1297290, 1451850, 1471468, 1481477

Offset

1,1

Comments

This sequence does not contain any repdigits, unlike A245385.

Links

Table of n, a(n) for n=1..39.

Example

4*84847 = 48484*7 = 339388. Thus 484847 is a member of this sequence.

Prog

(Python)
for n in range(1, 10**7):
  s = str(n)
  count = 0
  for i in range(1, len(s)):
    if i != len(s) - i:
      if int(s[:i]) != int(s[len(s)-i:]):
        num = int(s[:i])*int(s[i:])
        if num != 0:
          if num == int(s[:len(s)-i])*int(s[len(s)-i:]):
            count += 1
            break
  if count > 0:
    print(n, end=', ')

Crossrefs

Cf. A245385, A245364.

Cf. A262743 (predestined numbers).

Sequence in context: A127882 A240255 A045006 * A385145 A063354 A240248

Adjacent sequences: A245383 A245384 A245385 * A245387 A245388 A245389

Keyword

nonn,base

Author

Derek Orr, Jul 20 2014

Status

approved