A272682 Square root of concatenation of n and A265432(n).

15, 4, 145, 6, 65, 7741915625, 825, 85, 905, 30245625, 325, 1090619453125, 36, 37, 38, 39, 402484375, 414731890625, 135, 14, 456875, 46901578125, 475, 4885, 1575, 16, 1625, 165, 5375, 170759375, 54893244140625, 17638317373046875, 1795516819326995849609375, 57642802733386962890625, 185

Offset

0,1

Comments

The square of a(n) is one of the two squares that are required by the definition of A265432(n). The other is in A272683.

Of course if it ever happens that A265432(n) = -1, the definition will need to be changed.

Links

N. J. A. Sloane, Table of n, a(n) for n = 0..10000

N. J. A. Sloane, Table of n, A265432(n), sqrt(concat(n,A265432(n))), sqrt(concat(1,A265432(n))) (based on David W. Wilson 10000-term b-file for A265432)

Crossrefs

Cf. A265432, A272683.

Sequence in context: A278900 A278917 A279023 * A111122 A296009 A104436

Adjacent sequences: A272679 A272680 A272681 * A272683 A272684 A272685

Keyword

nonn,base

Author

Nathan Fox, Brooke Logan, and N. J. A. Sloane, May 23 2016

Status

approved