1,1

The Penguin Dictionary of Curious and Interesting Numbers, David Wells, entry 20161.

Table of n, a(n) for n=1..60.

Index entries for linear recurrences with constant coefficients, signature (2,-1).

a(n) = n + 1456 if n > 18705. - Charles R Greathouse IV, Feb 21 2017

12 is abundant, so 12+12=24 is in the sequence.

Cf. A005101. Complement of A048242.

Sequence in context: A058228 A093455 A080564 * A114635 A077969 A122181

Adjacent sequences: A048257 A048258 A048259 * A048261 A048262 A048263

nonn,easy

Jud McCranie

20161 is the largest number not in this sequence.

approved