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A084250 Let a(1) = 1; for n>1, let a(n) be smallest positive integer distinct from all earlier terms such that exp(sum(n>=1,a(n)*x^n/n)) has integer coefficients (cf. A084251). 1
1, 3, 4, 7, 6, 12, 8, 15, 13, 18, 23, 16, 14, 10, 9, 31, 35, 21, 20, 2, 11, 25, 24, 48, 56, 42, 40, 70, 30, 27, 32, 63, 26, 37, 83, 61, 38, 22, 17, 50, 124, 19, 44, 29, 108, 72, 95, 64, 57, 68, 89, 46, 54, 102, 28, 78, 80, 90, 60, 71, 62, 34, 146, 127, 84, 100, 135, 41, 96, 165 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A permutation of the natural numbers.

LINKS

Table of n, a(n) for n=1..70.

FORMULA

Exp(sum(n>=1, a(n)*x^n/n)) = sum(n>=0, A084251(n)*x^n).

CROSSREFS

Cf. A084251.

Sequence in context: A000203 A324545 A003979 * A090128 A086293 A003981

Adjacent sequences:  A084247 A084248 A084249 * A084251 A084252 A084253

KEYWORD

nonn

AUTHOR

Paul D. Hanna, May 22 2003. Revised May 29, 2003

STATUS

approved

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Last modified May 26 02:56 EDT 2020. Contains 334613 sequences. (Running on oeis4.)