A231094 Smallest starting abundant number for n consecutive even abundant numbers.

12, 18, 100, 348, 2988, 801340, 221355126, 221355126, 895257140404

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Example

a(6) = 801340 because 801340 is the starting abundant number for 6 consecutive even abundant numbers: 801340, 801342, 801344, 801346, 801348, 801350.

Mathematica

k = 2; cnt = 0; Table[While[If[abunQ[k], cnt++, cnt = 0]; cnt < n, k = k + 2]; k = k + 2; k - 2*n, {n, 6}] (* T. D. Noe, Nov 04 2013 *)

Crossrefs

Cf. A005101, A108926, A231086, A231088, A231089, A231090, A231092, A231093.

Sequence in context: A177426 A232384 A086301 * A258427 A166627 A018957

Adjacent sequences: A231091 A231092 A231093 * A231095 A231096 A231097

Keyword

nonn,more,hard

Author

Shyam Sunder Gupta, Nov 03 2013

Extensions

a(9) from Donovan Johnson, Nov 07 2013

Status

approved