A277806 a(n) = A000196(A277699(A277807(n))).

115, 230, 460, 461, 920, 922, 1840, 1844, 3680, 3688, 7360, 7376, 14720, 14752, 29440, 29504, 56757, 58880, 59008, 113514, 117760, 118016, 130057, 227028, 235520, 236032, 260114, 454056, 454933, 471040, 472064, 472533, 520228, 908112, 909866, 942080, 944128, 945066, 1040456, 1816224, 1819732, 1884160, 1888256, 1890132, 2034537

Offset

1,1

Comments

A277807 lists the "sporadic" solutions to A048720(n, A065621(n)) = k^2, i.e., those solutions where n is not in A023758 (not yet proved: these are precisely those solutions where k <> n). This sequence gives the corresponding values of k.

If n is included in this sequence, then also 2n is included (and vice versa), thus the sequence is infinite and wholly determined by its odd terms.

Links

Antti Karttunen, Table of n, a(n) for n = 1..57

Index entries for sequences related to binary expansion of n

Formula

a(n) = A000196(A277699(A277807(n))).

Prog

(Scheme) (define (A277806 n) (A000196 (A277699 (A277807 n))))

Crossrefs

Cf. A000196, A023758, A048720, A065621, A277699, A277704, A277807.

Sequence in context: A224673 A181931 A229324 * A122562 A063361 A340098

Adjacent sequences: A277803 A277804 A277805 * A277807 A277808 A277809

Keyword

nonn,base

Author

Antti Karttunen, Nov 01 2016

Status

approved