Numbers k such that exactly one d, 2 <= d <= k/2, exists which divides binomial(k-d-1, d-1) and is not coprime to k.
A178071
Numbers k such that exactly one d, 2 <= d <= k/2, exists which divides binomial(k-d-1, d-1) and is not coprime to k.
Terms
- a(0) =14a(1) =16a(2) =18a(3) =22a(4) =27a(5) =28a(6) =39a(7) =55a(8) =65a(9) =77a(10) =85a(11) =221a(12) =437a(13) =1517a(14) =2021a(15) =4757a(16) =6557a(17) =9797a(18) =11021a(19) =12317a(20) =16637a(21) =27221a(22) =38021a(23) =50621a(24) =53357a(25) =77837a(26) =95477a(27) =99221a(28) =123197a(29) =145157
External references
- oeis: A178071