A116329 Numbers k such that k*(k+1) gives the concatenation of two numbers m and m+6.

387, 431, 569, 613, 816, 4523, 5477, 90912, 316834, 683166, 3636366, 6363634, 82352944, 331668334, 368421055, 395604393, 442767756, 461538464, 488721802, 511278198, 538461536, 557232244, 604395607, 631578945, 668331666

Offset

1,1

Links

Table of n, a(n) for n=1..25.

Crossrefs

Cf. A116185, A116322, A116330, A116343.

Sequence in context: A230274 A230475 A375944 * A273383 A038659 A232777

Adjacent sequences: A116326 A116327 A116328 * A116330 A116331 A116332

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved