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A309202 Peter Munn showed in A111273 that if A111273(n)=m then if m is odd, n <= m, and if m is even, n <= 2*m-1; a(n) is either m-n or 2*m-1-n in the two cases. 1
0, 1, 0, 1, 10, 1, 0, 3, 0, 1, 32, 1, 78, 7, 0, 1, 34, 1, 0, 7, 12, 1, 0, 15, 0, 1, 8, 1, 58, 1, 0, 15, 154, 1, 24, 1, 666, 1, 12, 1, 82, 1, 128, 1, 24, 1, 140, 7, 0, 25, 16, 1, 106, 1, 32, 19, 0, 1, 176, 1, 1830, 1, 0, 15, 0, 1, 200, 23, 36, 1, 0, 1, 2628, 37, 24, 1, 66, 1, 236, 27, 0, 1, 0, 55, 0, 43 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

It is known that if p is an odd prime, a(p-1) = 1 (see A111273).

LINKS

Table of n, a(n) for n=1..86.

CROSSREFS

Cf. A111273.

Sequence in context: A068159 A108695 A265373 * A105031 A307978 A118762

Adjacent sequences:  A309199 A309200 A309201 * A309203 A309204 A309205

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 26 2019

STATUS

approved

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Last modified January 27 10:00 EST 2022. Contains 350607 sequences. (Running on oeis4.)