A265397 a(n) = n - A264977(n).

0, 0, 0, 0, 0, 4, 0, 0, 0, 4, 8, 4, 0, 12, 0, 0, 0, 4, 8, 12, 16, 16, 8, 12, 0, 12, 24, 12, 0, 28, 0, 0, 0, 4, 8, 28, 16, 24, 24, 36, 32, 40, 32, 32, 16, 40, 24, 28, 0, 28, 24, 36, 48, 40, 24, 36, 0, 28, 56, 28, 0, 60, 0, 0, 0, 4, 8, 60, 16, 40, 56, 52, 32, 48, 48, 72, 48, 64, 72, 68, 64, 72, 80, 72, 64, 84, 64, 64, 32

Offset: 0

Author

Antti Karttunen, Dec 16 2015

Keywords

• nonn

Comments

Note that A264977(n) gives the value of the n-th Stern polynomial (cf. A260443, A125184) evaluated at X=2 over the field GF(2), while n gives the value of the same polynomial evaluated at X=2 in the usual way.

Each term seems to be a multiple of 4.

Links

• Antti Karttunen, Table of n, a(n) for n = 0..8191

Crossrefs

Cf. A125184, A260443, A264977.

Cf. A023758 (positions of zeros).

Programs

Scheme

(define (A265397 n) (- n (A264977 n)))

Formula

a(n) = n - A264977(n).