A241034 Start number of first run of exactly n consecutive economical numbers.

125, 4374, 1097873, 179210312, 10546514090622

Offset

1,1

Links

Table of n, a(n) for n=1..5.

J.-M. De Koninck and F. Luca, On strings of consecutive economical numbers of arbitrary length, Integers: Electronic Journal of Combinatorial Number Theory 5, (2005), #A5.

Richard G.E. Pinch, Economical numbers, arXiv:math/9802046 [math.NT], 1998

Carlos Rivera, Puzzle 53

Eric Weisstein's World of Mathematics, Economical Number

Crossrefs

Cf. A046759, A079323.

Sequence in context: A264139 A030690 A017451 * A265931 A265477 A017583

Adjacent sequences: A241031 A241032 A241033 * A241035 A241036 A241037

Keyword

nonn,base,hard,more

Author

Arkadiusz Wesolowski, Apr 15 2014

Extensions

a(5) found by Jens Kruse Andersen

Status

approved