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A269362
Least monotonic left inverse of A269389.
6
1, 2, 2, 3, 3, 4, 5, 6, 6, 6, 7, 7, 8, 9, 9, 10, 10, 11, 12, 13, 14, 15, 16, 17, 18, 18, 19, 20, 21, 21, 21, 22, 22, 22, 23, 24, 25, 26, 27, 27, 27, 28, 29, 30, 30, 31, 32, 32, 32, 32, 33, 33, 34, 35, 36, 37, 38, 39, 40, 41, 41, 42, 43, 44, 44, 45, 45, 45, 46, 46, 47, 48, 49, 50, 51, 52, 53, 53, 54, 54, 55, 56, 57
OFFSET
1,2
COMMENTS
a(n) = number of terms of A269389 <= n.
LINKS
FORMULA
a(n) = A269849(6+n) - 6.
Other identities. For all n >= 1:
a(A269389(n)) = n.
PROG
(Scheme, with Antti Karttunen's IntSeq-library)
(define A269362 (LEFTINV-LEASTMONO 1 1 A269389))
CROSSREFS
Cf. also A270193, A270199.
Sequence in context: A030565 A174231 A072509 * A321695 A197432 A255573
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 16 2016
STATUS
approved