A327430 Numbers k such that there are exactly 5 numbers j for which binomial(k, floor(k/2)) / binomial(k,j) is an integer, i.e., A080383(k) = 5.

40, 176, 208, 480, 736, 928, 1248, 1440, 1632, 1824, 2128, 2400, 2464, 2720, 3008, 3360, 3520, 3776, 3904, 4144, 4240, 4320, 4704, 5280, 5664, 6432, 7040, 7200, 7360, 7488, 7992, 8064, 8544, 9504, 9792, 10336, 10400, 10944, 12160, 12992, 13158, 13392, 15744

Offset

1,1

Links

Vaclav Kotesovec, Table of n, a(n) for n = 1..181

Example

C(40,20) is divisible by 5 binomial coefficients: C(40,0), C(40,2), C(40,20), C(40,38) and C(40,40).

Crossrefs

Cf. A080383, A080384, A080385, A080386, A327431, A080387.

Sequence in context: A262487 A322774 A264547 * A251210 A211497 A251203

Adjacent sequences: A327427 A327428 A327429 * A327431 A327432 A327433

Keyword

nonn

Author

Vaclav Kotesovec, Sep 10 2019

Status

approved