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A323901 a(n) = A002487(A163511(n)). 11
1, 1, 1, 2, 1, 4, 2, 3, 1, 8, 4, 7, 2, 4, 3, 3, 1, 14, 8, 11, 4, 18, 7, 9, 2, 12, 4, 9, 3, 8, 3, 5, 1, 22, 14, 43, 8, 34, 11, 47, 4, 16, 18, 23, 7, 26, 9, 13, 2, 16, 12, 23, 4, 18, 9, 17, 3, 6, 8, 11, 3, 6, 5, 5, 1, 64, 22, 127, 14, 112, 43, 97, 8, 84, 34, 121, 11, 26, 47, 111, 4, 66, 16, 89, 18, 40, 23, 57, 7, 36, 26, 57, 9, 50, 13, 29, 2, 50 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
FORMULA
a(n) = A002487(A163511(n)).
a(2^n) = 1 for all n >= 0.
PROG
(PARI)
A002487(n) = { my(a=1, b=0); while(n>0, if(bitand(n, 1), b+=a, a+=b); n>>=1); (b); }; \\ From A002487
A005940(n) = { my(p=2, t=1); n--; until(!n\=2, if((n%2), (t*=p), p=nextprime(p+1))); t }; \\ From A005940
A054429(n) = ((3<<#binary(n\2))-n-1); \\ From A054429
A163511(n) = if(!n, 1, A005940(1+A054429(n)));
CROSSREFS
Cf. also A323902, A323903.
Sequence in context: A208569 A341392 A351886 * A132223 A224712 A363301
KEYWORD
nonn
AUTHOR
Antti Karttunen, Feb 09 2019
STATUS
approved

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Last modified March 28 13:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)