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A283993 a(n) = number of reducible Stern polynomials in range B(1,x) .. B(n,x). (Polynomial B_1(x) = 1 is not included in the count). 4
0, 0, 0, 1, 1, 2, 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13, 13, 14, 14, 15, 16, 17, 17, 18, 18, 19, 20, 21, 22, 23, 23, 24, 25, 26, 26, 27, 27, 28, 29, 30, 30, 31, 32, 33, 34, 35, 35, 36, 36, 37, 38, 39, 39, 40, 40, 41, 42, 43, 43, 44, 44, 45, 46, 47, 47, 48, 48, 49, 50, 51, 51, 52, 52, 53, 54, 55, 55, 56, 57, 58, 59, 60, 60, 61, 61, 62, 63, 64, 64 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10001

FORMULA

a(n) = (n-1) - A283992(n).

PROG

(Scheme) (define (A283993 n) (- n (A283992 n) 1))

CROSSREFS

Cf. A125184, A260443, A283992, A283994.

Differs from A255572 for the first time at n=65, where a(65) = 43, while A255572(65) = 44.

Sequence in context: A099249 A050296 A057062 * A255572 A065855 A236863

Adjacent sequences:  A283990 A283991 A283992 * A283994 A283995 A283996

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 20 2017

STATUS

approved

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Last modified July 18 07:10 EDT 2019. Contains 325134 sequences. (Running on oeis4.)