A109464 Numbers n such that A112131(n) and A112131(n+1) are both Harshad numbers.

9, 103207, 106039, 150200, 172003, 303714, 370649, 544019, 952640, 1000129, 1089247, 1104024, 1124514, 1243264, 1668275, 2030120, 2060910, 2304925, 2330000

Offset

1,1

Comments

Conjecture: Sequence is infinite.

Links

Table of n, a(n) for n=1..19.

Example

a(1)=9 because 910/10 = 91 and 101112/6 = 16852.

Crossrefs

Cf. A109448.

Sequence in context: A185293 A281360 A034995 * A300195 A368068 A159344

Adjacent sequences: A109461 A109462 A109463 * A109465 A109466 A109467

Keyword

base,more,nonn

Author

Jason Earls, Aug 28 2005

Status

approved