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A232100 a(n) = the position of A232099(n) in A055926. 3
41, 123, 205, 287, 369, 451, 533, 615, 697, 779, 861, 943, 1025, 1107, 1189, 1271, 1353, 1435, 1517, 1599, 1681, 1763, 1845, 1927, 2009, 2091, 2173, 2255, 2337, 2419, 2501, 2583, 2665, 2706, 2747, 2829, 2911, 2993, 3075, 3157, 3239, 3321, 3403, 3485, 3567, 3649 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

In range n=1..2215, each a(n) is a multiple of 41, with a(2215) = 177079 = 4319*41. In that range, all 2160 odd multiples 1, 3, 5, ..., 4319*41 occur, but only 55 even multiples, with a(34) = 66*41 = 2706 being the first one of them. The multipliers for even terms in that range seems to be given by 66*A047253(1..55) from 66*1 up to 66*A047253(55) = 66*65 = 4290. (Where A047253 gives the numbers not divisible by six).

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..10007

FORMULA

A055926(a(n)) = A232099(n) for all n.

PROG

(Scheme, with memoizing definec-macro from Antti Karttunen's IntSeq-library)

(definec (A232100 n) (let ((x (A232099 n))) (let loop ((i (if (= 1 n) 1 (A232100 (- n 1))))) (if (= (A055926 i) x) i (loop (+ 1 i))))))

CROSSREFS

Cf. A232099, A055926, A047253, A232741.

Sequence in context: A135793 A135792 A256347 * A195038 A067896 A205797

Adjacent sequences:  A232097 A232098 A232099 * A232101 A232102 A232103

KEYWORD

nonn

AUTHOR

Antti Karttunen, Nov 18 2013

STATUS

approved

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Last modified May 19 22:56 EDT 2019. Contains 323411 sequences. (Running on oeis4.)