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 A257696 a(0) = 0; for n >= 1, a(n) = GCD(A060130(n),a(A257684(n))). 6
 0, 1, 1, 2, 1, 1, 1, 2, 2, 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 3, 1, 1, 2, 3, 3, 4, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 2, 2, 1, 1, 2, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,4 LINKS Antti Karttunen, Table of n, a(n) for n = 0..10080 FORMULA a(0) = 0; for n >= 1, a(n) = GCD(A060130(n),a(A257684(n))). PROG (Scheme, with memoizing definec-macro) (definec (A257696 n) (cond ((zero? n) 0) (else (gcd (A060130 n) (A257696 (A257684 n)))))) CROSSREFS Cf. A060130, A257684, A257694, A257695. Sequence in context: A228431 A165620 A128494 * A110730 A198339 A262561 Adjacent sequences:  A257693 A257694 A257695 * A257697 A257698 A257699 KEYWORD nonn AUTHOR Antti Karttunen, May 05 2015 STATUS approved

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Last modified December 12 23:01 EST 2018. Contains 318081 sequences. (Running on oeis4.)